Again, the voltage regulator helps to keep the battery fully charged. We took it in to the dealer and they said everything was ok. JavaScript is disabled. Merry Christmas to you as The only" By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. That's a tough one because it could be a faulty battery, alternator, hall effect sensor on the battery lead, ECM or BCM or a poor connection that maybe got disturbed when you changed out the original battery. It will target generator output voltage 12.5-13.1 volts. Proceed towards connecting the battery positive and negative leads to their respective battery terminals. The BCM relies on input from a 3-wire battery current sensor. chargers with a slow charge mode use the most electricity to recharge a battery and are best for charging a battery over a longer period of time. Vehicle charging systems provide electrical energy to power your car as youre driving and keep the batterys charge. Once in this mode, the BCM will set a targeted output voltage between 13.9-15.5 V for about 5 minutes. "Service Battery Charging System" warning. If you find any residue or corrosion, clean them up. The proper test is a load test when the battery is fully charged. Apr 16, 2021. 2015? you are brave to drive it like that, if the voltage is low eventually it will crap out on you. Nine steps to reset the Service Stabilitrak with a scan tool. This only happens every couple of days or every other. The Chevrolet service battery charging system is a system that monitors and charges the service battery when the car is not in use. I've replaced the In voltage reduction mode, the ECM targets generator output voltage 13 volts. the alternator. The most common sign is displaying a red color icon that stands for a vehicle battery. Pull the hood release under the dashboard and open the hood. I had to jump off my truck to get If they move even a little bit, that could cause an issue. be taking it in first thing in the What test are they performing? Position the Battery Tester towards its voltmeter settings. If the battery light comes with a temperature light, you should avoid any activity with the vehicle. 1999 Chevy Tahoe not starting passlock/starter/battery? It also depends on your vehicle brand and makes and the location. Look for a worn-out or loose drive belt, alternator connection problems, loose alternator mounting bolts, and corrosion and dirt around the battery case and cables. As the owner of a 2008-2013 model year Chevrolet Tahoe or GMC Yukon, or 2009-2013 model year Cadillac Escalade, Chevrolet Silverado LD or GMC Sierra LD hybrid 2-mode vehicle, your . You will need to set it if the voltage drops below 12 volts before proceeding. The water pump usually uses the same belt that powers the alternator. The message seems to only come on while the truck is idling or moving at slow speeds (like when I drive down my muddy driveway or stopped at a light). But this time it only lasted it before at 30 seconds before the message went away. No way it drained the battery that fast? The serp belt may have come off, although that's not too likely since the engine isn't overheating. Jun 18, 2016. Generally, charging output will be in the range of 13.8 to 14.8 volts but the exact specifications vary by make and model. about 8 months ago I upgraded the battery from the stock GM one to a bluestar 770cca battery. O. Most ppl in the car don't notice it but it's enough that I do. If there are no issues with the alternator or battery, you can inspect the other components of the battery charging system for any probable issues. The BCM sets a targeted generator output at startup. When it reads under that, it means the battery is defective. The warning went away, but just came back the other day. For example, you can check your charging system by inspecting the Serpentine belt for probable damage or unfastened issue. My '07 NNBS is showing "Service Battery Charging System" and the battery indicator, but my gauge is still ~12v key on not running, 14+ when it is running. Chevy and GM Battery Current Sensor on Amazon:. The only way to determine if the system is in Fuel Economy Mode (besides observing the criteria), is to view the current mode on a scan tool. However, the BCM will command a voltage reduction mode if the battery temperature is above 32F and the battery current is less than 1 amp but greater -7 amps. Swapping Yukon XL Captain chairs with Seat Rails from 03 Escalade. Additionally, the device may need to be re-configured to use the battery. Mark helpful 60 coley8518 answered 8 years ago Position the current probe towards the alternator B+ output lead. Engine & Drivetrain . CarComplaints.com: . [SIGPIC]http://www.gmfullsize.com/forum/image.php?type=sigpic&userid=20067&dateline=1251765707[/SIGPIC], if its an 07 on the original battery its about that time just get a new battery and be done with it. Last Sunday the battery began to hesitate starting when I turned the key, but then cranked over & started. Also, terminal corrosions can reduce the conductivity, resulting in low charge situations. Then follow the diagnostic routine for that code. This could keep your vehicle from starting next time. Try to stop by a well-secured and bright area that is bright and employ the towing services. I will Immediately the power is dead, the car will cease movement. So, My 2009 Yukon Denali throws the "service battery charging system" message on a daily basis. He said Theres a chance that you left your headlights on or other parts on, draining your battery. Knowing this information, EPM can calculate optimum voltage regulation operation to maintain battery voltage, meet the vehicles electrical needs, and extend battery life. Below are some of the reasons why the service battery charging system come on: Often, the alternator is at the root of the service battery charging system indicator. Message On My 2007 Tahoe 'Service Battery Charging System' - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Make sure battery has a full charge and connections all good. Sometimes, you might want to turn on your vehicle, but it would refuse to start; it is a sign of a bad battery, one that no longer holds a charge. If you would post it it might help someone.thanks and merry christmas. 10K views 2 months ago Causes and fixes for a Chevy or GMC that has a "service battery charging system" message on the dashboard. It is not advisable to drive with the service battery charging system indicator on, as it could leave you potentially stranded by the roadside. For a better experience, please enable JavaScript in your browser before proceeding. What does a charged battery indicate on a Chevrolet service battery charging system? Then I would take it to autozone or advance auto and have them test the alernator. If you have issues with your driving belt to the extent that it prevents the alternator from functioning properly, it can make the service battery charging system indicator come on. Chevy Volt Service High Voltage Battery System (Fix) Chris Walter 81 subscribers Subscribe 375 57K views 5 years ago This is a POTENTIAL fix if you have this warning. Disclaimer: Links on this page pointing The BCM will command Fuel Economy Mode when it measures air temperature to be at least 32F but less than 176F, and the battery current is less than 15 amps but greater than -8 amps, and the SOC is greater than or equal to 80 percent. The high speed cooling fan, rear defogger and HVAC high speed blower is activated Battery temperature is less than 0C (32F). Virtually all AutoZone within the USA can check your alternator, starter, or when your battery is not charging. . The charging system includes a battery charger, a ground cable, and a power supply. Therefore, you should take it to your mechanic, who can check the alternator voltage. " service charging system ", means you have an issue with your battery, your alternator, or your voltage regulator. As you are arranging the voltmeters positive lead using the alternator B+ terminal, grind the negative lead. Swapping Yukon XL Captain chairs with Seat Rails from 03 Escalade. Proceed to attach the terminal ends to the battery, with black going to the negative and red to the positive end. GMs new Electrical Power Management (EPM) system is pretty smart and very fuel efficient. The BCM will enter Charge Mode when all these conditions are met: Windshield wipers operate for more than 3 seconds. CHARGING SYSTEM LIGHT ON, SERVICE BATTERY CHARGING SYSTEM MESSAGE DISPLAYED, DTC B1405 . I've seen the system throw the warning up when the battery starts to get weak on the NNBS's dozens of times. The vehicle has had no issues since. With the engine off, pop the hood open and visually inspect the different components of the charging system. Replaced It may not display this or other websites correctly. Fear lights flash on and off . Used Chevrolet Tahoe. The vehicle Speed is greater than 90 mph A current Sensor Fault Exists System voltage is below 12.56 volts Tow/Haul Mode is enabled. today the "service battery charging system" message come on. I've never gone to start the truck and had a dead battery so I want to say the alternator is doing its job. off. Again, inspect the battery terminals and ensure it is up to 12 volts without loads. Grab ahold of them and wiggle around. But this time it only lasted it before at 30 seconds before the message went away. the battery if when someone jumped This morning the "Service Charging System" message came on and the battery light - Answered by a verified Chevy Mechanic . Inspect the multimeter reading. 1. Shuddering/Grinding Noise Only When Turning Off Engine and Throttle-Oil Pressure - SOLVED. It is making a How do I remove 2nd row bench seats in Ignoring the service battery charging system warning or battery signal light is dangerous. it looked fine. Performance of the truck doesn't seem to be hurt in any way however the voltage gauge doesn't stay super consistent while driving. Make sure every electrical component is off. A Chevy service battery charging system is responsible for maintaining the battery's charge while the car is being serviced. When at a idol the battery voltage has 14.6 but as soon as you give it the gas the voltage will start dropping down to 12 volts and below. Join both parts to the positive battery post. For a better experience, please enable JavaScript in your browser before proceeding. You will have to replace your alternator if he finds the voltage below normal, as the old one is defective. Used Ford Explorer. I just bought a 2014 Chevy Cruze with 30,000 miles. Had AAA put in a battery and getting service battery charging system message. The battery charging system is integrated into the computer in todays vehicles. 1 people found this helpful. the computer was update also and it still will charge for a liitle while then . You should have it checked as soon as possible. For a proper check-up and servicing, you can also move your car to any good mechanic as soon as possible. My Tahoe only goes on short 20 min trips to and from work, so I am assuming its not getting a long enough run to charge up the battery. Eautorepair.net redraws factory wiring diagrams in color and includes the component, splice and ground locations right in their diagrams. Content will be removed if CarGurus becomes aware that it violates our policies. That saves a lot of time because you dont have to refer back to the component locator or circuit locations. Faulty Alternator If your battery is low or bad, it could also cause your service battery charging system indicator to come on. If youre tracking down a wiring issue, Eautorepair.net is the better choice. I hope this is not something that will cost me a ton of money, plus its only 2years old!! alternater and all passed. The charging voltage is set to 14.3 volts for 30 seconds. If that turns out ok then hook up a millimeter to the battery while the car is running. The The 2012 Chevrolet Colorado is the perfect size pickup for running errands on the weekend and doing light duty chores around . RC LEVEL|20x33|NITTO|MAGNAFLOW|HELLWIG|AUTOCAL. i have a 2012 chevy tahoe for the past couple of days i have to have someone jump me Driving to work last week it died on me. The charging system includes a battery charger, a ground cable, and a power supply. On the other hand, the computer or regulator operates as a traffic cop to regulate the alternators output. In modern vehicles, the battery charging system is comprised of the alternator, the battery, and the electronic control unit (ECU). Ensure there is a greater output in the alternator output as the car engine runs at 2000 RPM. Depending I replaced the alternator with a napa premium reman and also replaced the RVC module that is attached to the bat tray and the ground cable runs through it. 77 Great Deals out of 1,559 listings starting at . For a better experience, please enable JavaScript in your browser before proceeding. 30 Great Deals out of 504 listings starting at $7,999. It may not display this or other websites correctly. farynhite; Feb 27, 2017; General Tahoe/Yukon Discussion Forum; Replies 1 Views 6K. Your mechanic will know better how to test your car batterys strength. Set the Battery Tester to its ammeter function. Posted on Feb 02, 2011 1 Related Answer Heres an example of the correlation between duty cycle and voltage output, 10% 11 V 20% 11.56 V 30% 12.12 V 40% 12.68 V 50% 13.25 V 60% 13.81 V 70% 14.37 V 80% 14.94 V 90% 15.5 V. In addition to controlling how much power the generator puts out, the EPM is executes several program modes. load test. Again, ensure that every inner alternators wirings and connections are checked, and inspect every fusible connection while looking out for any burnt one. Most times, service charging battery system messages are caused by a malfunctioning ECU. 2008 Chevrolet Silverado - 5.3L/4x4/Extended Cab/LT. If you click them and make a purchase, we . the battery as been change, the alternator has been change. 2007 - 2014 Tahoe/Yukon/Escalade Models. Is a 2005 and 2007 chevy tahoe fenders and front But why wouldnt it be If your Tahoe's engine won't crank or cranks very slowly, then the most likely culprit is a weak or dead 12v battery. Here are the basics of how your Tahoe's charging system works: A serpentine belt turns the alternator. I'll unplug and plug the sensor back . The other day it came up again. Also, check to ensure that there is no residue from corrosion in the battery terminal connections and make sure they are properly tightened. A mechanic will check your drive belt for any issues, and if it is damaged, it needs to be replaced. This only happens every couple of days or every other. Do Not Sell or Share My Personal Information, 2012 service battery charging system message, 2012 chevy Tahoe z71 4 by 4 with lights on top connnected to battery. . 01. If the battery isnt charging properly, it may need to be replaced. If you click them and The GM Electrical Power Management (EPM) is designed to: 1) Maintain battery charge above minimum levels, 2) Lower fuel consumption when electrical generation isnt really needed, 3) Get the longest life out of the battery to reduce unnecessary replacement. You will need to use a multi meter to check continuity. Swapping Yukon XL Captain chairs with Seat Rails from 03 Escalade. If you dont know, dont start replacing parts! with this year and model. This is on a 2008 Tahoe LTZ with 125K miles. . I have been getting this message on the dash off on on for the past few months. 2,068 Great Deals out of 51,775 listings . I had the battery and charging system checked and all are up to specification. Holds there for a while, then drops again and holds there. Likely a diode trio causing that. They hooked up a machine to the Stays on a few seconds to a minute or 2 and goes off. You are using an out of date browser. Thank If it reads up to 9.6 volts at 21C, it means the battery has good capacity. . make a purchase, we may earn a small commission. What are the four stages of a Chevrolet service battery charging system? Arrange the load control knob towards the right side to enable the ammeter to release up to half of the batterys cold-cranking amps. Basically, you can top. All seem to be tight. In voltage reduction mode, the ECM targets generator output voltage 13 volts. #3. For a better experience, please enable JavaScript in your browser before proceeding. Now let's get down to how you can do this. In other words, your car will lose power. The Chevy service battery charging system is a series of electrical components that allow a Chevrolet service battery to be charged. As mentioned earlier, the light is a sign that the alternator has stopped charging the battery, thereby preventing your cars electrical system from acquiring the complete power it desires. If the service battery charging system indicator suddenly comes on while driving at night, locate a mechanic workshop to prevent the engine from dying down. 1,500 RPM's. Check the voltage again. JavaScript is disabled. I hope this helps you. It may not display this or other websites correctly. A ground battery charging system allows the battery to be constantly topped off and will constantly be charging. Check battery cables and cabel ends and grounds. and rev up engine to approx. > Tahoe & Suburban Oct 25, 2009 - The Service Battery Charging System message keeps comming on in . What is the difference between a float and a ground battery charging system? It depends on the state of charge of the battery. The generator bat terminal is hot all the time, even with key off. You must log in or register to reply here. If you test the charging system while it is in Fuel Economy Mode using traditional charging system methods, you will falsely determine that the generator is defective. Performance of the truck doesn't seem to be hurt in any way however the voltage gauge doesn't stay super consistent while driving. i have a 2012 chevy tahoe for the past couple of days i have to have someone jump me off. Service battery charging system also indicates that the vehicle cannot travel far before it halts due to a lack of electrical power. First, wear protective gear and follow this procedure to test the system components. the alternator/ generator. I keep having the Service Battery Charging System light come on. Thanks for the insight, gang! The ECM ultimately controls the field current to the generator, but bases its decisions of data from the BCM. This website is using a security service to protect itself from online attacks. The first time it came up it lasted for about 40 mins before it went away. bulbs. Service battery charging system 40 Answers. This is on a 2008 Tahoe LTZ with 125K miles. battery. Threw it on the trickle charger for a few hours and the condition cleared. 2023 Sierra 1500 3.0 LZ0 Standard Bed, Pacific Blue. If the battery is not dead, then you can inspect the battery connections and the alternator. I had the old battery checked and replaced shortly after I bought the truck a couple of months back since it had trouble starting. Make sure its making good contact. help. The battery was tested at the dealership and it came up good. The other day it came up again. Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! If your Chevy Malibu shows "service battery charging system," it means your Chevy has a harmful problem and needs maintenance as soon as possible. I drive a '99 Tahoe 4x4. This is because the service battery charging system indicator tells you that the car depends on the stored battery power alone to power each of its electronic systems. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Most alt charging is computer controled on newer trucks . Newer Chevrolet vehicles have a plastic cover on top of the battery. Therefore, a good mechanic should be consulted to avoid further damage or disappointment. Car Wont Move In Drive (Causes & Solutions). First thing to check would be that battery cables are nice and tight. If you click them and Good luck. Next, you should implement the No-Load Test and Load Test. Heres the explanation for each mode. If not then the alternator is the problem. make a purchase, we may earn a small commission. Models: 2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2007 GMC Sierra, Yukon, Yukon XL with Active Fuel Management System Vortec GEN IV 6.0L V8 Engine (VIN Y -- RPO L76) and HYDRA-MATIC 4L70-E Transmission (RPO M70) This bulletin is being revised to remove the 4L60-E transmission and add condition information. The BCM and the ECM will send a GMLAN message to the DIC for the SERVICE BATTERY CHARGING SYSTEM message to be displayed. morning. Additionally, examine the battery using a test light or multimeter to ensure it is full. How old is your battery Ramiro? Make sure the battery is 100% fully charged. Normal duty cycle for the current sensor is between 5-95%. Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Work on the alternator; if it is too faulty, then replace it. However, it is not advisable to leave the electrical devices youre not using on. Put the car in the NEUTRAL and activate the parking brake. Here are a couple links that you may find helpful: One way to fix service battery charging is to check the voltage and current of the battery. 2013 Chevrolet Silverado 1500 5.3L 70k. Did you get to the bottom of this? Mar 9, 2017 . To solve your vehicle charging system issue, you should check it yourself, and you should do it the right way as well. service battery and charging system appears and disappears on warning monitor needle comes to discharge and charge and battery lite on dash comes on, new battery same problem 3 Answers 235 shawns2005vette answered 8 years ago Seems to be a very common problem with this year and model. The battery stores electrical energy; hence it cranks the engine to ignite the car and provides current to the parts whenever the engine is not in motion. New battery. For a better experience, please enable JavaScript in your browser before proceeding. With the engine off, you should get a reading somewhere between 12.0 volts and 12.6 volts. This system helps to keep the battery healthy and charges it when it is needed. What is the problem with getting aftermarket battery? New battery. The charging system will enter a battery sulfation mode which tries to increase the vehicle charging when the charging system voltage is less than 13.2 V for about 30 minutes. Occasionally the red battery icon on the dash comes on and in the message center I get "Service Battery Charging System". well. 2007-2014 Tahoe / Yukon / Escalade Models. Also Read: Car Stutters When Starting (How To Fix). Well, even new things can go bad quickly sometimes. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. June 29, 2018 at 5:32 pm #1783238. Then, position the multimeter selector switch towards the DV volt position. I am travelling for one month. I had the old battery checked and replaced shortly after I bought the truck a couple of months back since it had trouble starting. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. 2008 CHEVY TAHOE BATTERY DRAIN, THE PAST 8 MONTHS. I've noticed that when the service charging system warning comes on the voltmeter reads well over 14v. Seems to me your alternator is having trouble providing electricity at low rpms. Below are the steps: Turn off the ignition and find your vehicle's diagnostic port (It's usually under the dashboard). Think there is one. testing it. I had just driven 30 miles to work with no issues, nothing out of the ordinary. Contains hate speech or attacks an individual, Nudity, pornography, or sexually explicit content. The indicator light appears in red and shows the BATT anytime a key is in the ignition and the engine is off. You must log in or register to reply here. Would love to know the fix. 2. when i have a battery issue i call around to auto part stores to see who has the equipment to test the battery to determine if the battery is the problem. . I may hook up a trickle charger to it. Late production 2007 Silverado 1500 with 5.3 engine. The only thing left before the engine is silenced might be just a few miles. Monday comes along, longer hesitation then it starting, charging at . Do not worry, because we have the answers to your questions. My guess judging by the gauge it was about 15-16v. With both terminals connected, you will ideally look for a figure of around 12.6 volts or more. You can test it through the following steps; Inspect your vehicles alternator to make sure that it is working properly. If the battery light comes on as youre driving in the daytime, it means there is enough time for you to figure out the solution since you arent relying on electrical devices such as headlights. Read full answer. I recently had my engine rebuilt and i am now getting the message "service the battery charging system". Most battery places can test battery and charging system. Then, allow the negative battery post to connect with the negative test leads. trickle chargers are the slowest and use the least amount of electricity to recharge a battery. Check on recalls as well as service The BCM commands sulfation mode if it sees charging voltage dip below 13.2 volts for 45-mins. I could go on and on about the system, it does work and i have left it intact, i also install a overdrive pulley on the alt for the summer months to compensate for the extended idleing and dual ac on max that we experience here in the ca desert. A few weeks ago my battery light started coming on intermittently while driving. How long the pulses stay in either ON or OFF position is referred to as pulse-width-modulation, or duty cycle. When something goes wrong with the charging system, the service battery charging system warning will always illuminate. FlexOffers, Cool Automotive Products and Tool Recommendations, Read AUTO REPAIR ARTICLES sorted by topic, What is electronic brake force distribution (EBD), Reduced engine power message on Buick Encore,Chevrolet Trailblazer, Custom Wordpress Website created by Wizzy Wig Web Design, Minneapolis MN. In other words, it helps to detect if the battery requires charging or if it changes its desire for electricity. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. It is commanded ON when a charging system DTC is a current DTC. And make no mistake, the Tahoe Hybrid was a splurge. '11 LTZ, born Aug 2010, Fairfax, KS. Therefore, if the water pump stops working, it will cause the engine to overheat, thereby leading to severe damage and costly repairs. Started out as a charging system service message and after the voltage dropped to the bottom of the gauge . I still think a battery load test is in order. The light indicator usually shows you that the battery is no longer working or the alternator has ceased functioning. Other daily symptoms include flickering lights and screens while at idle. Set your multimeter to 20volts direct current (DC) and start the vehicle. For proper servicing of the battery charging system, you can take the following steps; Also Read: How To Test An Alternator (3 Best Ways). This is beneficial for the battery as it will not be discharged and will have a higher voltage when it is fully charged. Once the car has stopped moving, it could be a sign of a faulty alternator.