Do you think I should still use the Chevy if the light comes on again. [] My first thought was alternator is going bad. Then the light finally came on. Foolishly, I drove it to work the next day with the intent of leaving early and working on removing the alternator to replace it. The short story is everything tests good however the battery light is on and will not go off. (idled for about 15 min and went from 12.4 to 13.7 volts). 14.4 volts at idle, the car runs and drives, but, the battery light is still illuminated. (I only paid for the first one of each) The problem still persists and am wondering if the new alternator was even needed. Could it be something else. Want Answer 0. (ps) replace the alternator 2 times just in case it was bad When I restarted the battery light is on. The battery is holding charge. This only means that the charging circuit from the alternator is not working in the voltage regulator or the Battery light went away after, however I didn't drive he car. Car Won't Start with New Battery: Signs of a Bad Alternator If your car won't turn on with a new battery, it's possible that the alternator wasn't working properly . This means your new battery wasn't being charged as it should and is thus losing charge. A new battery will last long only if the alternators are working well. Now i have the battery from the m3 which i know is good in the car and a new alternator. Reply Like. I have yet to drive it around and won't be able to till tomorrow. After driving it around for a minute or so, the battery light came on. But, upon closer inspection there was actual a fault in the new The voltage regulator can't do its job if voltage is fluctuating all over due to crummy connections. 06 Liberty - Battery Light - Still on after alternator and battery change. Posted by valwilly on Oct The Alternator light is controlled by the alternator, specifically by the voltage regulator. Always measure the voltage with engine off and engine on, when diagnosing charging system problems. 13.4 - 14 volts. I have a 2004 Toyota Matrix XR. Tested battery it is fine. 09-27-2022, 08:56 PM. Do the basic checks, battery cables are clean and tight, the grounds from the engine and transmission are in place and clean and tight too. Put a volt meter on the battery and it is charging. Two weeks ago, the battery light on my 2005 Element came on. Why is my battery light on but alternator is charging? The alternator is charging. So I replaced the battery and the alternator and it still has the light on. Not sure what to do. It would only occasionally flicker on then off and it was mostly off. With the engine off I tested both batteries with my multimeter and both are over 12V. My 2004 Mercury Monterey broke down last night (all electronics shut off and it came to a sputtering halt) due to a bad alternator. Started the truck and the voltage goes to 13.5V. This is why I dont understand why the light is staying illuminated. Often times this will result in the alternator allowing too much power to be delivered to the battery resulting in damaging wires and prematurely sometimes destroying the battery. Aug 3, 2018. A relatively common side-effect of replacing a battery and/or alternator in a car is to have the voltage (battery) warning light come on. Thinking taking new alternator out to get it tested. The engine light comes on when I start the car and then goes off. Took the car out today, all feels normal and no light. - Cars & Trucks question. There are generally two reactions to an illuminated check engine light: people panic or just hope it goes away. And its not keeping charge. But as the battery get lower it still cranks over but takes longer and longer to start. Since the alternator isn't generating vehicle electricity, the problem component pulls from the battery, slowly draining it overnight until your vehicle won't start. I replaced the battery, just to elimunate it, also figuring it would be good PM anyway since it was 6 years old. If the ELD malfunctions or the engine computer cannot switch on the alternator, then the alternator will not charge and the Battery Light will come on. This is especially true in late-model vehicles When BMW alternator voltage output is above or below the recommended limit ( typically 13.3-14.5 volts), then the red battery warning light will illuminate on the dashboard, and a message will pop up on the iDrive screen.. The new alternator that was installed 800 miles away was working partly and charging the battery okay. Search Fixya. I recently replaced my original battery (8 years), and when I started it, light did not come on, but occasionally flickered to 12 volts at idle. Thinking taking new alternator out to get it tested. Help please. If the ELD is at fault then fault codes will be stored in the engine computer. Could it be something else. The battery light symbol lit up recently in dashboard, I put in a new battery but it turned out the alternator wasnt charging the battery so I replaced the alternator with a new one and Im still This may suggest a bad grounding issue or potentially a failing voltage regulator. If you can see the belt slipping, of there is a noise coming from the pulleys, then they may need to be changed. All the power goes direct to the starter and doesnt do any damage I have an old SR5 Toyota as a beach bomb with a dead alternator thats $1200 to replace, so I charge it of the solar. Accord euro 2006, 90k km. Tested battery it is fine. It is because cars of this model have more sophisticated diagnostic 99% of the time when I put an alternator on and the light is still on its a bad alternator. This is a unit that regulates the charging of the battery by the alternator. Several days ago my battery light started blinking on. Heres some other info I found in All Data: The PCM uses the ambient air temperature sensor to control the charge system voltage. Battery light came on. The engine code is still showing up on the scanner and I have not erased it. 2006 F150, I had my battery and alternator checked along with any other codes the truck may be throwing and everything seems fine. Here are a few signs that you might need a new battery or alternator:-Your battery is Changed alternator,and the battery light is still staying on,why. Happened again and battery light stayed on, dealership replaced alternator, happened again, replaced battery, happened again, another alternator, then another battery. Killed the battery in few min. Tests To See If Alternator Is Bad Or NotStart the vehicle. Either jump-start it or charge the battery to get it started. Disconnect the jumper-cables or whatever it was that you used to start the vehicle. Go back to the inside of the vehicle and eyeball the dome light.If the vehicle stayed running after disconnecting whatever it was that got it going, then notice the dome light's intensity.More items Understandable but wrong. NRMA was called in and diagnosed as bad alternator. Monday on my way home from work in the 100deg heat (first of the year) and the AC on full blast (obviously) the red battery light on the dash lights up. I changed out the alternator and started the truck up. I read someplace that you had to log eight hours for the computer to reset and the light to go off, but now have 20 hours since the change / upgrade and the light is still on. Engine rpms go more than 2000 and still the warning light is there. But now the battery light is illuminated. I was told the battery was bad so I got a new one. Battery Light on but Alternator Is Charging Cause and Fix I notice that when fully charged it starts in a second, instantly. Posted by valwilly on Oct 05, 2008. A day after that it started to go on and off Browse Categories Answer Questions Changed alternator,and the battery light is still Tighten the Battery Clamps. If your battery is draining while driving, it is almost without exception the Maximas alternator that is causing the problem.If it is you should see the battery or alternator light on, it indicates that the alternator is not creating the necessary voltage to charge the battery. Changed alternator, battery light still on, volts a little low. And the DIC keeps telling me to service the charging system. If it is a new battery it should not be dropping to 11 volts either the battery is faulty or you have a parasitic drain on the vehicle. If you have replaced the alternator and battery and the light is still on we either have a bad replacement alternator (possible but not likely) or there is another problem with the Afraid to get stuck somewhere with the boat so I think I am going to put a hitch on both or one of the Rav 4s. I replaced it this morning and, after a jump, I will go out and ask the alternator store to check the original one for bearing and brushes Light still on. The cause of the battery light could be a loose or corroded battery cable or other wire connecting components of the charging system, or it might be a problem with the alternator or voltage regulator. Thread starter RexSmith; Start date Jul 22, 2022; Tags alternator battery battery light Jul 22, 2022 #1 R. RexSmith New Member. Ive fitted a new battery and new alternator but my car still dies? Received 430 Likes on 382 Posts. Light is still on so you changed the alternator. This temperature, along with data from monitored line voltage, is used by the PCM to vary the battery charging rate. A shop checked it out. Testing Your Battery Using a multimeter, you can determine a couple of things about your battery whether it is at a sufficient charge, and how well it handles several demands. Often, when I start the car I detect the battery warning light, after cranking the engine, most of the time when cold. Alternator was bad. Signs of a Failing BatteryTrouble Starting Your Car. One of the main issues associated with a bad battery is when your car has trouble starting. Corroded or Damaged Battery Terminals . If your car doesnt start, there is a high chance that it has something to do with your battery. Your Car Cranks Slow. Dim Headlights or Interior Lights . Bad Smell Coming From Under The Hood . They charged 600$ for a new alternator (which they said was new and generic) and installed it. I tried several alternators, one being new, and put in a new battery and a new belt. Clicking this will make more experts see the question and we will remind you when it gets answered. Replaced it today, along with some wires that were in rough shape, cleaned all the connections and fired it up. This is generally a first step before going through the removal process or jumping the battery and bringing it into AutoZone for further testing. So the two day living Hell installation is complete, battery is charged, and the car starts. Good, but the battery light is STILL on. Five Signs It's Time to Replace Your Alternator Difficulty Starting. If your car is having trouble getting started and just turns and turns before starting up, it's possible that your alternator is wearing out. Dimmed Accessory Lights. If you start up your truck and notice that the dash lights, dome light, headlights, and/or radio get a little bit dimmer when your trying to Dead Batteries. More items Last night the battery indicator light came on solid before starting the car. The moment you rev the engine more than 2000, the light goes off Battery light is still on. The persistent battery light is a common side-effect of replacing either or both the battery and alternator in late model cars. Symptoms of a faulty alternator include car not starting, headlights dimming or a charging system warning light on the dashboard. At idle the battery reads 13.58v, at idle with the lights and So - AZ is going to replace the new alternator - with another new one. The DME module monitors the BMW alternator operation, voltage output, and battery charging. 27060-22040 wich might explain the faint dim battery light on after installation. 7. What you need to do is remove the battery terminals, remove the battery cables, and clean the battery terminals. I just changed my alternator and the battery light is still on I have a 2003 Dodge Neon SE new battery you unhook the - Answered by a verified Dodge Mechanic We use cookies to give you the best possible experience on our website. The light is turned on by a PCI BUS circuit, with the voltage regulator built into the ECM. At times, the battery light remains From your description if it has had the battery and alternator replaced and is still running the battery down it sounds like you have got a drain (parasitic drain) on the vehicle. Yeah it could be, but the best bet is to check both ends of battery and alternator cables and make sure they are clean of corrosion and tight. No codes just the red battery light. The Changed alternator, battery light still on, volts a little low. The alternator generates the power that is stored in the battery. I had it tested at my local Autozone and they deemed that the alternator was going on it. 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