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Old 09-23-2002, 05:04 AM
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OVP question


what is the meaning of OVP and where can I find this element on my car (300CE 89').

Thank you
P.S. pics would be appreciated
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Old 09-23-2002, 01:36 PM
Registered User
Join Date: Sep 2002
Location: Ewa Beach, Hawaii
Posts: 333
Over Voltage Protection Relay

I just changed my OVP Relay a few days ago. It's located just behind the battery. It's the one with the red top and a fuse. You can't miss it. Just pull it out and replace it with a new one. Easiest fix you'll do on your car. The relay cost about $100 at the dealers, I got mine for $58 from an independent shop.

Sometimes you don't need to change your OVP, just check your fuse and tap it a little and that may do the trick. Worth the try.
1986 Gold 300E 4Dr automatic
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Old 09-23-2002, 02:12 PM
G-Benz's Avatar
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Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
Re: Over Voltage Protection Relay

Originally posted by jrmd01
Sometimes you don't need to change your OVP, just check your fuse and tap it a little and that may do the trick. Worth the try.
If the fuse is okay and "tapping" the OVP allows your car to start, then the problem is loose solder joints inside the unit, which means replacement is inevitable.

The original unit is defective and has been replaced with an updated version.
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
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Old 09-24-2002, 05:40 AM
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I found mine and it has two (yes 2) fuses of 10A each!

Perhaps is becaus my car is european ?

BTW thank you for your advices.
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