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SLK R172 2011 Central locking not working with remote.

1603 Views 11 Replies 2 Participants Last post by  jbanks15, 
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Just got my car back after a complete respray (Fireopal Red paint problem under warranty)and found that the central locking wasnt working. Got tham to do a Diagnostic but said they couldnt find the problem but found corroded terminals in the Sam box and was going to cost £550 +vat + fitting. Told them to forget it and went to pick up the car and it was working again. One week later its not working. Any Ideas.
Ive checked the Sam box myself and it is spotlessly clean inside and no sign of corrosion.
My remotes are perfectly ok. The locks work from inside the car. The car locks at 15mph. Could it be the Remote receiver? Any Ideas???
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jbanks15
How old is your battery?
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jbanks15 said:
How old is your battery?
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My battery is 4 years old the same as the car. But is in perfect condition.
One moment the remote locking was working next moment nothing.
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jbanks15
page 56

Have the vehicle battery and the vehicle
battery connections checked at an
authorized Mercedes-Benz Center

http://www.mbusa.com/vcm/MB/DigitalAssets/pdfmb/ownersmanual/2011_slk.pdf

could be bad cell when it works sometimes...just sayin' :D
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jbanks15
time for a reset! :D

you know how of course?
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jbanks15 said:
page 56

Have the vehicle battery and the vehicle
battery connections checked at an
authorized Mercedes-Benz Center

http://www.mbusa.com/vcm/MB/DigitalAssets/pdfmb/ownersmanual/2011_slk.pdf

could be bad cell when it works sometimes...just sayin' :D
Click to expand...
Its been into Mercedes Benz dealers for 3 days. I would imagine they checked the battery. But then Knowing Mercedes very doubtful.
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The system was reset by Mercedes last week after the diagnostic.
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jbanks15
you never know.
they also said it was corroded, didn't they?

so if it has not returned, blame gremlins
if it returns, then do battery reset

how do they 'reset? same as us? :D

disconnect the battery (neg cable) for a minimum of 30 minutes
reconnect cable
reset clock and synch/reset windows
see how it behaves
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Yes I can try that. It just makes me wonder what the problem really is. Works one day then not the next then works again then not.
Seems like something loose of not fully connected. The car has only done 14000 miles.
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jbanks15
usually 'electronics' behave after the reset, if they really reset it. To them a reset might be synching the windows, now known in R172 manual as a 'reset'.
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jbanks15 said:
you never know.
they also said it was corroded, didn't they?

so if it has not returned, blame gremlins
if it returns, then do battery reset

how do they 'reset? same as us? :D

disconnect the battery (neg cable) for a minimum of 30 minutes
reconnect cable
reset clock and synch/reset windows
see how it behaves
Click to expand...
I would have thought the system was reset by computer by mercedes dealership.
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jbanks15
see my post above your last. one never knows :D
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