2005 cl55
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2003 CLK500, 2008 e350
2005 cl55
I've got some interest in purchasing a 2005 cl55. The car seems to be in great condition with one exception. The battery had to be replaced and, since this was done, the SRS light went on, the rear window shade doesn't work and the doors will not lock. The owner seems to think the battery need to be reprogrammed. Does this make sense to anyone on this forum?
Last edited by rwolak; Jun 2, 2019 at 07:37 AM.
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2002 CL500 to CL55 conversion
batteries do not get programmed. there are two possibilities here it seems -
possibility A) you have a cheap underpowered battery (not uncommon) that cannot cope with the amount of electronics these cars involve. these cars need a more powerful battery than most cars
if the previous owner put in a cheap battery, they probably also didn't service their ABC system regularly and this car could turn out to be a huge disappointment for you unless you have plans to swap the suspension to coilovers
possibility B) the car has not been "re-synced" since changing the battery. the long term fuel trims will usually reset themselves and the ecu and tcu will re-adapt to the engine and transmission as well as your driving habits. Other things that need re-synced after disconnecting the battery are the steering angle/ESP sensor (turn wheel hard left, then hard right, then straight again (with engine running)) and the power windows/sunroof. To reset the windows and sunroof you hold the controls in the furthest position for 5+ seconds and then hold the control in the opposite direction for 5+ seconds and the windows will re-sync.
I can't attest to your situation with the rear shade, mine was removed by a previous owner for aftermarket subwoofers. The SRS light is common to come on after a battery reset but should quickly go away. If the SRS light DOESN'T go away it often means the sensor in the passenger seat is bad, or sometimes one of the seatbelt control modules. They make "quick fix" mods to fix the seat sensor issue, I think most other SRS issues involve disassembling the seats themselves
If the doors do not lock then that sounds like the lock mechanisms in the door are bad, OR more commonly the vacuum pump in the trunk is not working correctly. they often fail after 10+ years
possibility A) you have a cheap underpowered battery (not uncommon) that cannot cope with the amount of electronics these cars involve. these cars need a more powerful battery than most cars
if the previous owner put in a cheap battery, they probably also didn't service their ABC system regularly and this car could turn out to be a huge disappointment for you unless you have plans to swap the suspension to coilovers
possibility B) the car has not been "re-synced" since changing the battery. the long term fuel trims will usually reset themselves and the ecu and tcu will re-adapt to the engine and transmission as well as your driving habits. Other things that need re-synced after disconnecting the battery are the steering angle/ESP sensor (turn wheel hard left, then hard right, then straight again (with engine running)) and the power windows/sunroof. To reset the windows and sunroof you hold the controls in the furthest position for 5+ seconds and then hold the control in the opposite direction for 5+ seconds and the windows will re-sync.
I can't attest to your situation with the rear shade, mine was removed by a previous owner for aftermarket subwoofers. The SRS light is common to come on after a battery reset but should quickly go away. If the SRS light DOESN'T go away it often means the sensor in the passenger seat is bad, or sometimes one of the seatbelt control modules. They make "quick fix" mods to fix the seat sensor issue, I think most other SRS issues involve disassembling the seats themselves
If the doors do not lock then that sounds like the lock mechanisms in the door are bad, OR more commonly the vacuum pump in the trunk is not working correctly. they often fail after 10+ years
