W126

300SD with 420SEL Final Drive question

Kent,

I replaced the rear axle assembly, axles and final drive, of my 1983 300SD with one from a 1991 420SEL. I really like the result with one exception: the speedometer is off (something was wrong when I started passing everybody on the highway at 55 mph). I read somewhere that the problem would be fixed if I repalce the speedometer with one from a 420SEL. Does that make sense? The 420 has a speed sensor in the final drive, the 300SD gets it speed information apparently from somewhere else. Any suggestions would be appreciated.

Thank you
Dieter

Chassis Model Number

W126

Forums

Transmission / Suspension Specific Aid

1987 300SDL Power Seats not moving back and forth

When I operate the seat switches on the doors(driver's and passenger's), only the seat backs will fold forward or backwards. The seat bottoms will not move forward or backwards, but the seat bottoms will move up and down. My 5foot tall wife cannot drive our Mercedes since it is set to my 6 foot height! Benz-aid help needed! Thank you.

Chassis Model Number

W126

Forums

Body and Interior Specific Aid

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