O.V.P. is just a Zener Diode, relay and a fuse or two - depending on variation.
You are really better off buying a new one - they're relatively cheap.

F.P.R.'s E.C.U.'s etc are all subject to extremes of heat and cold plus dampness. Any wonder that they start to misbehave after twenty years plus.

You average consumer computer electronic product would have died long, long, long ago id subject to the same ambient conditions.

True. But I have had older cars with electronics that have had no issue. It seems the solder used is sub-par. I wonder if there was some euro environmental regulation in place that prevented using a particular solder or whatever. Something was may have been ok in the states to use for manufacturing.

But the solution of re-soldering is typically fast and free. So I guess we can not complain too much.

__________________
1991 560 SEL / 185k miles
1992 750il / 17k miles - project car

The Zener diode can develop a cold solder at the joints or even a break under jump starting condition. Re-soldering gets it operational again . The Red fuse stays good .

Ad

Lead Free solder for example?

Lucky the electrics are not Lukey - The Prince pf Darkness