Charge low warning @ 147 GTA [need Help]
My 147 GTA does have some strange electrical issues.
It started nearly 8 weeks ago. Windows opened very slowly and wipers speed was also low.
A few days later (it was really cold outside) I got the VDC and ABS failure while driving to work, for a short moment but it went off again. This indicated low voltage for me, because theese sensors are the first to come on when voltage is low.
I replaced the battery and checked the voltage without engine running and while running.
Without was ~12,5V and running ~14V. Windows opend quick again.
Everything was fine the next weeks with the new battery, except the fact, that the voltage after starting the engine needed a bit of time to go up to >14V from 12,5V, which could mean that the alternator was not charging the battery from start up, only when engine (parts) are getting warmer.
Two weeks ago, while driving home from work, it was very cold again I got VDC and ABS failure but the error stayed active. The headlights went dark and dashbord illumination failed. I could drive to the next parking area where the engine failed because of low battery charge.
My garage installed a new alternator and checked all wires again. Battery is also brand new. They gave me a call to pick up the car. But when I wanted to go home from the garage the "battery charge low" warning came up, which means alternator is not charging at all. (It was very cold outside again, car stood outside over night). The mechanic who installed the new parts had the gta for a 50km drive after everything was finished without any warning.
I left the garage without the GTA. They checked all fuses and relays and also installed a new grounding wire to the gearbox to eleminate that kind of issue.
The battery charge low failure still comes up for a few seconds when engine is cold and disapears a few seconds/minutes later when everything is warmed up.
Any ideas what wire/fuse/relay could cause such an issue? As said, alternator is new, battery is new.
Its definitly something with the temperatur! At low temps, alternator is not charging, warmed up (or outside warm) everything is fine.
Many thanks in advance!
(Please excuse my english!)
Last edited by M-IU14; 29-01-13 at 14:30.