1st Gen R53 Cooper S Most liked posts in thread: What does this mean?

Probably a lose connection wit a wheel speed sensor. Check them all.

 

If thgere is a bad signal from the wheel speed sensors ti will affect the ABS and TPMS systems. Had the exact ame issue last week. Checked the wheel speed sensors and found the front one was gopped up with road crap. Cleaned it up and viola, the issue was gone.

 

Mine started doing the same thing a couple of weeks ago and cleaning fixed it. A real good cleaning behind the hubs where the sensors are plugged in and check the connectors should take care of it unless a sensor has actually gone bad. I wouldn't think there are any moving parts in one of those so what can go bad unless broken wire or connector or evil spirits. You really want it to be just dirty 'cause the sensors are expensive.

 

See the black wire in the picture below? That's the sensor. It plugs into the steering knuckle (big piece of steel) behind the brake rotor dust shield (rotor not shown here). Jack the car up and turn the steering wheel to one side so you can get access to the area behind the wheel. If you trace the sensor wire up and towards the engine, you'll see a bright blue tube-shaped connector. Squeeze the tabs and separate the tips. Take some CRC QD Electronics Cleaner and spray both sides of the connection, using an old toothbrush to clean out any gunk, and let it dry. Then squeeze some dielectric tune up grease into the connection and push one side into the other. Dielectric grease is silicone based, so it repels water.

 

Whoa.... BThayer23 you need to come by and use my pressure washer,bucket with simple green,cleaning brushes ,semi gloss black paint and about 2 hours of labor. :cornut:

 

What he said. I just blasted everything out with with the hose and it quit doing bad things. Now I've got a new project when it warms up a bit. Thanks "B".

 

Good to know Ben. I'll store this one away in case I need it.

Jim

 

Thank you, Nitro, I was going to say something but was afraid of appearing to be impertinent.

 

Hahaha, it's a track car! And if you think that picture's bad, you should see the front bumper and hood. Rock chips galore, rubber streaks, dull spots in the paint... I think the bumper is more white than blue. Your estimate of two hours might be a little low, but you're more than welcome to bring your brushes and paints and waxes and show me how far two hours of labor will go.

 

Fortunately Ben's driving and mechanical skills are far greater than his washing skills.....lol

 

For what it is worth; a shop that is able to access the very most inner workings of the OBD port, can tell you exactly which sensor is messed up or not reading correctly. Can be a time saver for some people.

 

And that's not saying much 'cause y'all have seen my washing skills.

 

Glad to hear it, I know just how you feel now. I'm still gonna do the connector clean and grease treatment next time I've got the wells off.