Tyre Pressure, ABS & Traction Control Light On - MINI Cooper Forum

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post #1 of 4 (permalink) Old Jan 20th, 2014, 04:51 PM Thread Starter
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Tyre Pressure, ABS & Traction Control Light On

Pulled over yesterday to check my tyre pressures as I thought the car was pulling slightly over to the left. Had a look on the inside of the drivers door and it suggested 2.3 bar all round. Turned out the nearside passenger wheel had 2.2 bar, the rest 2.3. Not sure if 0.1 bar is enough to make the car feel unsettled, but anyway, topped it up.
After topping this up to 2.3 bar, I got about 10 miles down the road and the run flat indicator, the abs and the traction control lights all came on.
Have tried repeatedly to reset the run flat light but to no avail.

Had a bit of a read on here and all suggestions seem to point towards a wheel sensor. Seems a bit coincidental that there weren't any problems with the sensors until I topped up the air in the tyres.
I used one of the air pumps that stops itself when it hits the required pre-set pressure. I'm wondering if its worth going to another garage and doing the tyres again, just to be sure the first pump wasn't faulty and put too much/little air in one of the tyres, if it has could this be the cause?

Other than that, could it be some dirt on the sensor, maybe a quick jet wash could dislodge something thats covered the sensor?

I've booked the car in to my local bmw specialist, but they can't look at it till next Monday. Just conscious whilst the lights are on, there's not any abs or traction control.

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post #2 of 4 (permalink) Old Jan 20th, 2014, 05:35 PM Thread Starter
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Thinking about this again and also having a read around. Could I have put the wrong tyre pressures in?

I'm assuming the sticker inside the door is pressures for run flats as that's what the car would have had stock?

I'm running 205/45/17 non run flats on R98 Wheels. I stuck 2.3bar in all round which apparently converts to 33.35867974161psi! Is that about right for non RF's?

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post #3 of 4 (permalink) Old Jan 27th, 2014, 10:08 AM Thread Starter
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Ok, so local mini specialist has looked at the car today, say its a NSF Wheel Speed Sensor gone. 198 to fit a new one.

Looked around online and it seems like a relatively cheap part to buy and easy to fit.

My one question is if I go ahead and pop the wheel off and fit the sensor myself, will the lights go out themselves without any need for a code reset? I don't have any code reader/reset tools.

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post #4 of 4 (permalink) Old Jan 27th, 2014, 12:12 PM
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My specialist (Minicraft) charged me a reasonable 20 for a diagnosis for a duff pdc sensor so I would imagine a reset should be the same sort of cost.

This diagnosis and reset lark is a right old scam sometimes but in these situations, quite handy at identifying problems without expensive pointless attempts to fix them ourselves.

I have a duff seal against the rim on my front offside tyre so do check them fairly regularly but, having not been out in the car for a few weeks, I just jumped in and shot off - 10 minutes later the tyre pressure light came on - when I came to check I was horrified to see a 1.3 bar pressure in the tyre

I've been looking into valve caps with indicators on them but the reviews are pretty damning so I'm not so inclined to bother.
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