Question about 2004 Mini Cooper
I have the ABS, tyre and stability light all come on at the same time?
Posted by Anonymous on
I see a few problems with advice given here. The first is the statement made there is a "sensing plate" at each wheel that the abs sensor reads off of to generate a signal. That is incorrect. Some cars use a tone ring on the end of the C.V. joint that lines up under the sensor. When the axle spins under the sensor, the sensor reads the notches (or spaces) between the teeth on the ring. Washing this would be pointless because the sensor senses MAGNETISM which can't be washed or cleaned. The other statement jumps straight from "...if it's not the wheel speed sensor then it possibly could be a abs control module...". Here is the real deal. These Mini Coopers (like many other cars these days) have eliminated the use of a tone ring on the axle. It is all integral with the wheel bearing now. The sensor is mounted in the hub/steering knuckle, and the face of the sensor that reads the signal is facing the inside of the wheel bearing. On this inside edge of the bearing is a reluctor/tone ring that spins when the wheel is turning. The sensor is able to generate an AC signal while the wheel is spinning. Each wheel does the same thing. If all four wheels are spinning at the same speed the signals should be the same voltage output (or very very close). When the abs controller sees one or more wheels change speed according to what input it gets from each wheel speed sensor, the abs controller interprets that as a wheel locking up (or in the case of traction control, spinning or burning rubber). So in the case of wheel lock-up, the abs module becomes active and the pump comes to life distributing the correct amount of hydraulic pressure to each wheel to prevent lock-up and allow the wheel(s) that it believes are locking up to come back up to the same speed as the others, while still applying the brakes on those wheels. In the case of wheel spin, the pump might become activated and apply brake pressure to the wheel it sees rotating faster than the others to bring it back where it needs to be. Take everything you read on the internet with a grain of salt. Jumping from a relatively cheap wheel speed sensor or bearing assembly, to a $2,000.00 abs control module would be a costly mistake.
Posted on Oct 02, 2013
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Posted on Jan 02, 2017
SOURCE: i got the abs and
on all four wheels their will be a sensor and 'sensing' plate. First step is to clean these all up with a parts cleaner, and try again. If one of the sensors cant pick up a signal from the plate, then this will cause a fault. If no luck, inspect the wiring to and from the sensors, for obvious damage/short circuits. Hopefully this would have sorted it, otherwise their could be a faulty abs sensor. As for tyre pressures, i am not sure how the system works. What type of warning? If it is like some aftermarket systems, then maybe a battery has gone in flat on one of the wheel sensors
Posted on Jan 25, 2011
Ok, check the brake fluid level for a start. This could mean a few things. Your brake pads might be worn down, which would bring a yellow warning light on(triangle), at the same time with the pads being low it will have displaced the fluid, making the level low, this would be a red light on. Now because of this the body control module has detected these faults, will have turned the abs off, hence the abs light.
If brake fluid is low, this could confirm my theory.
If its low, top up with dot 5 brake fluid and take to garage to have new pads fitted.
Posted on Jan 24, 2009
SOURCE: mini cooper Warning lights for
When these lights come on together often times you need to replace a wheel speed sensor. check for the blue connectors under each fender well and make sure all of them are plugged in. 90% that I have seen are the front sensors that go bad, but you will not know unless codes are pulled by the dealer. If it is not the wheel speed sensors then it possibly could need a abs control module.
Posted on Feb 25, 2009
ECU - take it to a dealer for diagnostic and reset/repair
Posted on Jan 12, 2010
Testimonial: "Many thanks. Have had put on a machine at BMW and a local garage and it is not coming up with any error codes. Trying again on friday with dealer."
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