Keyless entry/go lost

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Preston-m3

Active Member
Joined
May 26, 2010
Messages
231
Location
Preston
Car
SL55 AMG. BLACK.
Hi, my SL55 has keyless entry and go but it doesn't work. What's it likely to be? Is it simple to re code to the car if so what does it cost?
Thanks
 
There are sensors in each door, the boot and the centre console.
It will be highly unlikely that all will have died at the same time.
Do you have two keys or just one?

Getting in on STAR will tell you the fault as it shows any working keys in range.

If the key has died and you have the later keyless go then expect to pay £300 for a new one.
If you have the early keyless go (plastic key) then new keys are no longer available.
 
Keyless go

Ok thanks. I have the earlier keys. If they are not available what will need to be done to get it working again?
Thanks
 
If the convenience battery is low then the car switches off things like keyless go. Won't do any harm to charge that and try again. Also is it enabled in the vehicle settings as you can switch off there.


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