SL/R129: 1991 500sl instrument cluster removal
Thread Starter
Junior Member
Joined: Jan 2007
Posts: 20
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From: buchanan dam, Texas
1999 500sl,1991 500sl,1964 T-bird convertible roadster,1964 t-bird convertible,1999 Harley roadking,
1991 500sl instrument cluster removal
does the 1991 500sl have a speedometer cable or is it electric. Trying to remove the cluster but will only come out about 2 inches. wondering if cable,etc. has to be disconnected first. please advise thanks
Junior Member
Joined: Nov 2004
Posts: 71
Likes: 5
From: Nelson NZ
17 E220d all-terrrain, 92 SL500, 16 C250D Wagon, 16 A200 (wife)
Instrument cluster
Fredi,
Its electronic on later models for sure (mine is 1992 (129-066) and is), not sure about 1991 but expect so, others should be able to confirm or deny.
On mine there is a tiny button in the middle of the odo reset that if you push at key on for about 10s puts it in diagnostic mode. Repeatedly press this and it goes thru a sequence of tests, and the instruments all magically start reading. Last one is the most fun, you get 7000rpm, 260kph, a full tank and only using 7km/l!!
Video I have of disassembly suggests putting your hand up under and pushing from the back if its stiff to come out, and hooks at each side.
Greg
Its electronic on later models for sure (mine is 1992 (129-066) and is), not sure about 1991 but expect so, others should be able to confirm or deny.
On mine there is a tiny button in the middle of the odo reset that if you push at key on for about 10s puts it in diagnostic mode. Repeatedly press this and it goes thru a sequence of tests, and the instruments all magically start reading. Last one is the most fun, you get 7000rpm, 260kph, a full tank and only using 7km/l!!
Video I have of disassembly suggests putting your hand up under and pushing from the back if its stiff to come out, and hooks at each side.
Greg
Senior Member
Joined: Jul 2005
Posts: 265
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From: Manchester, UK
500 SL R129, Blue - 1991. Mini Cooper S, Works Kit Silver - 2007. Mitsubishi FTO, Silver - 1996.
Just keep pulling gently it's probably stuck... you need to wiggle it out rather than pull in one direction. It'll come out, its just very stiff the first time. There are pin connectors at the back, no loose cables or anything screwed in.
I was worried when I did mine, you just need to be brave.
I was worried when I did mine, you just need to be brave.
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Joined: Aug 2010
Posts: 3
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SL 500
1991 mercedes instrument cluster reset
Hi Greg - I was thrilled to find your post about the button in the odo reset. I tried the process 1st thing this am, but no joy, the gauges are all still inop. Is there a particular order for the process? i.e., key on first then button or hold button then then key on, or should I start the engine? Any additional advice would be greatly appreciated. Thanks - Duane (Glakes1)
