SL/R129: (Half) Dead Cluster, Rough Shifts, and P1747
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From: Maryland
1997 SL500 “Sport”
(Half) Dead Cluster, Rough Shifts, and P1747
Hi folks. Question for ya…. Obviously there is a CAN bus / electrical / data issue occurring here. Suddenly, and unpredictably, my 1997 SL500 will throw a CEL (P1747), lose several gauges, and show an ASR and Oil warning light.
Obviously this is a wiring issue of some kind, not a mechanical one. The question is: what is supplying this data to the cluster and the gearbox simultaneously?
Any help appreciated!
Lucas.
Last edited by ChoonHound; Jan 13, 2025 at 08:44 PM.
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SL600
At least one of the fuses is gone, easy to find in the fuse box. But there is a reason for this you have to find, fuses doent blow for no reason. Check the lights at the inside mirror for a short, check the door mirrors inside insulation and the third stop lamp.
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SL600
And what if you take a quick look in the fuse box? I dont guess, i know (guess why 
) What about the three possible errors in listed above? Do they all work?
) What about the three possible errors in listed above? Do they all work?
Last edited by AndreasHannover; Jan 14, 2025 at 02:12 PM.
Thread Starter
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From: Maryland
1997 SL500 “Sport”
Despite being an illogical culprit due to the intermittent nature of the issue, I would love for the cause to be a blown fuse. So I checked. Every. Single. One. They were all fine. What else ya got?
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From: Maryland
1997 SL500 “Sport”
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Thread Starter
Newbie
Joined: Jan 2025
Posts: 8
Likes: 0
From: Maryland
1997 SL500 “Sport”
Senior Member
Joined: Oct 2017
Posts: 368
Likes: 73
SL600
It's OK, you're not done yet. There's a reason the fuse blew, so be prepared to experience the problem again. The lamp housing on the rear view mirror may have become brittle, if you get a chance I'd check for a short there.
