SL/R230: No reverse lights
Thread Starter
Senior Member
Joined: Feb 2018
Posts: 258
Likes: 34
From: Gluckstadt, MS
2003 R230
No reverse lights
03 SL500 with no lights in the tail light housing when the transmission is placed in reverse. Bulbs are good. Is there a specific fuse to check ? Where is the reverse switch on the trans or at the shifter? Thanks for any help.
MBWorld Fanatic!
Joined: May 2009
Posts: 1,187
Likes: 239
From: Santa Clara, Ca
2003 SL55 / 2002 SLK32
Short of the unlikely scenario where both wires have bad connections (at rear SAM output .... connector #4 pins 28 and 30), you likely have a problem in the rear SAM (decoding) OR the floor shifter (encoding, or shift lever position sensing) .... You could see if there are any other anomalies that might point to the floor shifter or rear SAM, but you likely need a dealer level diag tool (star tester or similar) hooked up at this point.
Hope that helps,
Chris
