Roof, Windows, Head Rest etc problem
02-04-2013, 05:21 PM
#1
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Mercredes CLK
Roof, Windows, Head Rest etc problem
If anyone has any ideas ...
I have a Problem with an CLK if I enter the boot and reset the battery disconnect (1 -2 secs) then all is good but after leaving the car for more than a few hours. The roof release switch stay red and windows done open, (even boot release plays up), headrests also seem not work... to Get it all working for a journey again just open boot then disconnect battery and start again...
Note : Board a new battery 2 weeks ago, as old one seemed to be drained by engine immobliser siren (Internal battery dead).
Any ideas a
I have a Problem with an CLK if I enter the boot and reset the battery disconnect (1 -2 secs) then all is good but after leaving the car for more than a few hours. The roof release switch stay red and windows done open, (even boot release plays up), headrests also seem not work... to Get it all working for a journey again just open boot then disconnect battery and start again...
Note : Board a new battery 2 weeks ago, as old one seemed to be drained by engine immobliser siren (Internal battery dead).
Any ideas a
02-05-2013, 08:41 PM
#4
MBworld Guru
SAM = Signal Acquisition Module. Instead of all the switches in your car being hardwired to the devices they control, they simply send a signal across a data bus and the SAM then picks that up and performs the function. The front SAM is located under the fuse box under the hood, and the rear SAM is under the fuse box in the trunk. It's no coincidence that the SAMs are part of the fuse boxes - you press a button to, say, activate the left turn signal, and the SAM in turn feeds power through the fuse to the bulbs.
Anyhow, the SAMs tend to be very sensitive to voltage fluctuations. Jump starting a dead battery can kill a SAM if there is too much of a surge. Low voltage from a dead battery can kill a SAM. Replacing the SAM is fairly easy, but they do have to be coded to your vehicle so it understands what options you have. If you were to find a used SAM from an identical vehicle (i.e. exact same options as yours, no more no less) then it should be a drop-in replacement.
Anyhow, the SAMs tend to be very sensitive to voltage fluctuations. Jump starting a dead battery can kill a SAM if there is too much of a surge. Low voltage from a dead battery can kill a SAM. Replacing the SAM is fairly easy, but they do have to be coded to your vehicle so it understands what options you have. If you were to find a used SAM from an identical vehicle (i.e. exact same options as yours, no more no less) then it should be a drop-in replacement.
