Tyre pressure monitor
Tyre pressure monitor
Author
Discussion

noblesparky

Original Poster:

2,148 posts

199 months

Tuesday 5th May 2009
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Hello Mini people,
My daughter has a 53 reg Mini Cooper, the trye pressure monitor is flashing, After looking on the interweb I have found the pressures to be 30PSI, is this correct? if not any ideas. Assuming that is correct where should I look as the indicator is still flashing. Thanking you in anticipation.

esuuv

1,377 posts

221 months

Tuesday 5th May 2009
quotequote all
not sure what the pressures should be - there is a sticker inside the passenger side door that tells you I think, as far as the pressure warning goes - there is a reset button on the left by the handbrake - pressing it should make the warning go out.

f.y.i. The mini system doesn't actually monitor pressure as such - it checks the speeds the wheels are rotating at - if one is gong faster than the others then its a smaller diameter so must be flatter than the rest.......and you get a warning.


ThunderSpook

3,819 posts

227 months

Friday 8th May 2009
quotequote all
The correct tyre pressures are in the manual.

From what I've read the tyre pressure monitor does monitor the air pressure, and will flash if the pressure in one or more of the tyres changes considerably from what it was when the system was set.

According to the manual (you should read it, it's quite helpful) you should inflate the tyres to where they should be, and then reset the tyre pressure monitoring system using the button under the handbrake. Instructions are in the manual.

jcwuk

1,127 posts

212 months

Sunday 10th May 2009
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noblesparky said:
Hello Mini people,
My daughter has a 53 reg Mini Cooper, the trye pressure monitor is flashing, After looking on the interweb I have found the pressures to be 30PSI, is this correct? if not any ideas. Assuming that is correct where should I look as the indicator is still flashing. Thanking you in anticipation.
We had this problem last week.

Dealer said that sometimes the switch gets dust / gunk in it as where its positioned it is prone to receiving dirt on it purley from the way its positioned.

They simply unplugged it and cleared it up and that fixed the warning sign.

Hope this helps ?



Edited by jcwuk on Sunday 10th May 18:16

DavidLScott

1,048 posts

240 months

Sunday 10th May 2009
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Check you haven't got a nail in one of the tyres.

My wife's warning light came on while I was on holiday but the handbook implied she could carry on using it Ok for a few days. One good reason for keeping the run-flats.

We found a 4" nail in one tyre which had caused a sudden deflation that resealed itself so the light had come on.
The tyre didn't look out of shape - it was only checking the pressures that showed which tyre was low.

The alternative is noted above - my niece's Cooper kept showing the light and it was the switch itself playing up.

Silent1

19,761 posts

251 months

Tuesday 19th May 2009
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They use the ABS sensors to measure wheel rotation speeds, so if one tyre loses a few psi it will turn faster than the other wheels and after a certain distance it will set the tyre warning light off.

Wilburo

391 posts

213 months

Friday 22nd May 2009
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ThunderSpook said:
According to the manual you should inflate the tyres to where they should be, and then reset the tyre pressure monitoring system using the button under the handbrake. Instructions are in the manual.
This is the key here - the tyre pressure warning system hasn't been set.

ThunderSpook

3,819 posts

227 months

Sunday 24th May 2009
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Actually, on this subject, does anyone actually know how it reads the tyre pressures? Does there need to be something special on the tyres? Is there any way of checking if it's working? I've just had to shell out for 4 runflats after finding out my car didn't currently have them.