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shogun 
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Joined: 22-February-2005 Location: Tokyo/Japan Status: Offline Points: 564 |
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 Topic: E34/ E32 Brake Light Circuit Warning Light RepairPosted: 08-November-2014 at 02:51 |
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E34/E32 BRAKE LIGHT CIRCUIT - CHECK CONTROL FAULT MESSAGE REPAIR - By Master E32FAN "My 1992 735 iL had intermittent troubles with BRAKE LIGHT CIRCUIT. It persisted with three different CCM modules. So, it's time to replace the Brake Light Switch, right? Well, maybe not!" The complete story for a free repair on the shogun website in my signature, click fixes>>brakes>>> Check control fault message repair |
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shogun
Really Senior Member II
Joined: 22-February-2005 Location: Tokyo/Japan Status: Offline Points: 564 |
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Posted: 10-November-2014 at 08:17 |
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That is the easiest to solve the problem, if it works. If not, you have to clean the switch http://www.nmia.com/~dgnrg/page_25.htm
Some comments from anotherforum : The solution is very elegant. The switch does meanwhile cost abt. EURO 40. It can be explained as example of a fireplace. The fireplace has a lot of soot on the walls of the fireplace. The solution - burn more wood or hardwood - the temperature rises and the soot is burnt too. The procedure with the switch is apparently similar. The burnt area shifts outwards and the contact is clean again. Contacts need some current load , so that the growing oxide burns . It is a self-cleaning effect, which just does not work with too low load. It is a small spark at the contact, brushing away the 'dirt' ... |
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E34/ E32 Brake Light Circuit Warning Light Repair
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