Question about 2004 Volvo S40
Brake failure light comes on shortly after parking sensor service required comes on after stopping engine ok for a while brakes seem ok brake fluid also ok could electrics be damp if so where are the common places
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Posted on Jan 02, 2017
The master cylinder has failed, the fluid bypasses from one cylinder to the other, this is really 2 cylinders in one, the brake system is split in an X pattern.
Posted on Nov 06, 2008
I had a problem with the interlock switch located on the brake pedal. There are too switches one for the brake lights and one dedicated to the cruise control. If either switch is acting up it will affect the cruise control. Then interlock switch is the same switch that is used on the clutch with cars that have a manual transmission. It has smaller electrical terminals in the connector than the brake light switch. You can jumper the connection and see if it solves the problem. You still have the other switch that will disengage the cruise control when you hit the brake. If that is the problem then that's the one you need to replace.
Posted on Oct 02, 2009
usually caused by failed generator. Fix the generator and other lights will also extinguish. The car should jump start, but will not stay running without a charged battery. Recommend removing the generator and take to parts store for testing. Would you like instructions for removing generator?
Posted on Oct 17, 2010
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