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  #1  
Old 01-21-2012, 10:33 AM
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Join Date: Jan 2012
Location: Los Angeles
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420 SEl instrument cluster out!

Hello out there!
The instrument cluster went out on my 90' 420 SEL. I started the car a few weeks ago and the fuel, temp, oil pres and speedometer were all dead. I pulled all the fuses to make sure they were not blown and making good contact and the instrument cluster started working again. This time it is out for good. I Did the same thing with the fuses and nothing, and now, my brake lights are out as well. All fuses are ok...Any thoughts would be kindly appreciated.

Thanks
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  #2  
Old 01-21-2012, 07:09 PM
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Join Date: Oct 2006
Location: Beachwood, NJ
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OVP or OVP fuse may be the problem.
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  #3  
Old 01-21-2012, 07:45 PM
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OVP Relay

Thanks NJ300. Where is the relay located so I can check the fuse? 90 420 SEL.
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  #4  
Old 01-21-2012, 08:17 PM
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Location: Green Bay, WI
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Its may be near the brake booster (inboard) on the back firewall. Small cover, mine is clear. Uses a "U.S." style fuse. 10 amps ONLY.
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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car
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  #5  
Old 01-21-2012, 09:54 PM
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LYL

Thanks LYL I will check it out tomorrow
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  #6  
Old 01-25-2012, 04:05 PM
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Fuse intact

Hi Lyl, I checked the fuse and it is ok. I was thinking it could be the OVP relay but wouldn't the fuse have blown if there was any problem in the circuitry? Any other suggestions would be appreciated.

Thanks
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  #7  
Old 01-25-2012, 11:12 PM
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Could be any number of things. I am not sure about the OVP relay being the problem, but they can go bad. Maybe take yours apart and decide if you want to refresh it. I re-soldered mine, it was pretty bad.
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1992 750il / 17k miles - project car
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