Low battery warning with new battery - voltage is good

Megane 2, 2008 had a voltage regulation issue. Alternator was outputing voltage too high (15.5V). This has also destroyed the battery.

Now both alternator and car battery are new but I keep getting low battery warning after already driving for 15-30 minutes.

Voltage on the cold battery is over 12.5V (was 12.85V when I last checked) and while car is working and low battery light is on it mesures between 13.5V - 14.6V (without pressing gas). When pushing the pedal it is always above 14V but never over 15V.

So everything looks OK so I am assuming that car computer is getting wrong voltage info for some reason? Any ideas?


이 질문에 답하기 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

점수 0

댓글 9개:

@stgwe what does that battery warning look like? Does it not give you a warning for a low battery on the keycard as well? Just making sure we are not mixing things up :-)

Hi, no, nothing on the keycard. Just a battery warning light on the dashboard.

@stgwe what I meant was then if your keycard battery is low, your vehicle will also display the battery message ;-)

CR2025 3V battery in the keycard mesures 3.04V. I did replace it with another coin battery that mesures 3.11V, however I don't think 3.04V should already be an issue.

@stgwe absolutely right, that should not be an issue. Thank you and just wanted to make sure before digging through the manual for the "real" battery issue

댓글 4개 더보기

댓글 달기