TPMS

[rmvf]

Okay today driving down motorway the TPMS light came on, ( not flashing )not checked pressures yet but will update with the outcome

[rmvf]

okay checked pressures all ok at 35.5psi, looking at tyres in general they look a little over inflated so decided to deflate so all were sitting at 35psi 1 psi below handbook spec. could be my pump, pressed initializing button all okay now.

looking through handbook there all lots of reasons why tpms alarm can go off, that's twice in 18 months both occasions were at high speed and bendy roads.

[AndyC]

My TPMS just isn't working. I checked the tyre pressures the day after delivery and they were all low so I pumped them up and reinitialised TMPS. Without the car moving it immediately showed a low tyre pressure warning even though the ABS sensors would not have seen any wheel movement. I have tried resetting the TMPS several times without success. I have added more pressure but nothing clears the warning. I will check with the dealer on Friday when I call in about the damage to the top of the aerial.

[howardsathome]

I think that this is a problem that will develop. Please see my initial comments under 'Wheels & Tyres', 'Tyre manufacturer'. TPMS is a good system and has advantages over the rival special electronic valves in the rim. They are liable to damage and have to live in an alien atmosphere.
I was aware of the early development of Run-Flat tyres and they proved that it was important to have TPMS systems or drivers just carried on driving until the tyre was destroyed. Not just 'get you home' as was intended. TPMS is only as good as the software.

[AndyC]

Problem sorted. The maintenance setting for the tyres was set to on. So it was going into an alarm state because I had not reset it when the time was due up. The problem is in the messages that the system displays. If it said 'Time to check you tyres' and not just the standard low tyre pressure warning it would be more obvious.

[Willpower]

I have tried resetting the TMPS several times without success. I have added more pressure but nothing clears the warning

The maintenance setting for the tyres was set to on. So it was going into an alarm state because I had not reset it when the time was due up.

  obviously need more practice. The system was working the human component wasn't 

[howardsathome]

Good point , well made. I had the same problem in the first 1,000 miles. The alarm warning is not logical. I should have a choice in the settings, or at least it could be explained. Not buried in the small print.

[rmvf]

car is due for second service and computer telling me its due, but also same as last year also saying to increase tyre pressure? I think its just linked, checked pressures all at 36psi, reset but still saying same? will ask dealer and get back to you all.

[rmvf]

Problem sorted. The maintenance setting for the tyres was set to on. So it was going into an alarm state because I had not reset it when the time was due up. The problem is in the messages that the system displays. If it said 'Time to check you tyres' and not just the standard low tyre pressure warning it would be more obvious.

I think mine set back on as default due to battery disconnect I agree " time to check your tyres" would be better that " increase tyre pressure" as that's stating that they are low.

more tech more to learn oh the joys.

[Gmsal]

Had my TPMS warning light come on yesterday near the end of a 120 mile journey. On checking at a garage air pump all the tyre pressures were the same, though slightly under recommended pressure. At the correct pressure the warning light stayed on so looked through the manual for ages until I found where the TPMS reset button was located.

If the Tyre Pressure Monitor light comes on, and once you've properly adjusted the air in your tyres (obviously checking for punctures or damage), you must reset the warning light by pressing and briefly holding the TPMS button which is located to the right of the steering wheel and is clearly marked (next to the istop button).

Most of you may already know this, but it had me foxed for a while.

[xtrailman]

The pressures should be checked with cool tyres ideally, after a 120 mile trip the heat in tyre will increase the pressure.

I always run with 38 psi all round rather than the 36 psi.

[Gmsal]

The pressures should be checked with cool tyres ideally, after a 120 mile trip the heat in tyre will increase the pressure.

I always run with 38 psi all round rather than the 36 psi.

Yes, that's a good point and I did check the pressure a couple of hours after the journey, having hoped that the warning light had reset its self.

That's when the manual came out.

[BigAl]

Other point worth noting is that, after inflation and resetting of TPMS, you may get a couple more warnings from the system to indicate low pressure. I've had to rest mine up to three times after inflation in the past until the system settles down!

Alan

[Cindy]

I was also told by my dealer that resetting the system after inflation sometimes takes about three goes before the car accepts that they have been adjusted. Sometimes mine accepts the first reset sometimes not.