Lamp Defective Error Message 1998 E320

  mercedes/e-class/1996-2003

Lamp Defective error message on a 1998 E320. I have been plagued by the “Lamp Defective” error message. All exterior globes checked and all are working. Replaced the right hand rear lense (on advice from a Mercedes dealer. Everything appears to work but the error message keeps coming up. Is there any way I can get rid of the error message? Is there an OBD that will clear the ECU? Any help would be gratefully received. Thank you in advance. Cheers, Eric

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