Not mentioned above and did happen on my E 320 T:

1/ Water leak through the power anntena base.

2/ Automatic seat lock release for rear seat backrests (did not work and seats could not be lowered). I hear from the dealer this is a common fault.

3/ The security pin that hols the bulbs for the rear lamps brakes easily, especially if by chance the spare wheel touches it.

4/ Admitted by the dealer: as a design fault, the rear speaker wiring (the ones located on the rear door armrests brakes easily, creating a ground and blowing the speaker(s).

5/ Sunroof operation is a nightmare (common in all W124s), especially if you use it often.

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A. Rosich
CL 500, 1998
S 500 L, 1998
E 320 T, 1995 [Sadly sold ]