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Old 08-01-2011, 04:59 AM
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W140 seat switch signals

There are 7 pins on the seat switch and 6 motors on the seat itself...
was wondering what the signals/pulses are FROM the switch to the seat control unit... is it a 1to1 for each motor? or is it a whole lot more complicated than that?

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Old 08-01-2011, 08:24 AM
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That car uses a voltage drop (resistance value change) to control the seat computers.
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Old 08-01-2011, 11:38 PM
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I love this place!!! :)
 
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it's not a direct +/- voltage to the motor then... would you know what voltage the microswitches can take? If I can somehow isolate them...apart from the PCB

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85 190E 2.3(SOLD)
86 230E (-->300D)
87 300D (-->300TD)
68 250S w/ a 615 and manual tranny (RIP)
87 300TD (SOLD)
95 S280 "The KRAKEN" (Turbo 2.9 602 transplant)
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