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Yes, the module arrangment is a lot different.
The picture shows what's what . . . that answers your 1st question.
When you press the 'button' does the LED light up?? If NOT, it looks like it's not connected. If it lights when the button is pushed for 4 - 6 secs, then it should start the readout process. Sometimes if the DM has been cleared, it takes some time for the 'system' to get into sync.
When the battery gets weak, it does do very strange things to the electronic modules. One thing that I watch for: when you start the car watch the IC lamps. If they really loose "ALOT" of brightness, then it's time to replace the battery. Not very scientific but you get the idea.
If it drops to 8V - 9V range, then mysterious DTCs get recorded. Such things as the windows loose their sync; ie don't know where the top is which happens w/ the coupe, so the doors won't close.
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Regards . . . . JimF
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'94 S500 Cpe
Visit my Mercedes Web Page
Last edited by JimF; 10-26-2007 at 09:09 PM.
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