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Battery and brake warning lights flash simaltaneously, but intermittently. What does this indicate?
This happens at highway speeds, 75 mph. If I slow down to 70 mph it stops. A friend says it could be a tailpipe sensor problem, at least that is what they had on their 1996 Subaru wagon.
Sounds like a short on a abs or emergency brake sensor since that would cause the brake light to be triggered also cause a sudden drop in voltage which would trigger the battery light could also be a bad ground at the battery
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The following are descriptions from the Mini-Cooper S owner's manual.
Service Engine Soon "?If the warning lamp comes on
either continuously or intermittently, this indicates a malfunction in the emissions-related electronic systems."
EML light: "Engine electronics ?Malfunction in the engine electronics. You can continue to drive with reduced engine output or engine speed."
Triangle circled by an arrow: "Automatic Stability Control plus
Traction (ASC+T)/Dynamic Stability Control (DSC)
?Indicator lamp flashes: System active: drive and braking forces are regulated.
The indicator lamp stays lit: ASC+T/DSC switched off with button or defective. In the event of a defect: please have the system inspected at your MINI Dealer."
First, inspect the belts to make sure none failed at high RPM. If one broke, inspect any cable or hoses in the plane of the belt to see if there was any damage (e. g., a ripped wire in the ASC+T/DSC system). Second, get a readout of the engine error code. (If you get indications of a major vacuum leak including rough idle, look for a blown head gasket.) If you get something else, please post the results in a comment so we can go to the next step.
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