Tyre Pressure Monitoring System

[rory]

On my 2009 Jetta you just hold, for a few seconds, the button in the row at the bottom of the dash just in front of the gear selector.
When it references; it lets out a single chime, same as the one that comes on with the warning and light on the dash, as well as removing that warning light.
Think it works on the comparative "behaviour" of the individual wheels in conjunction with the ABS more than an actual sensing of tyre pressure or diameters; in that a "hard" tyre will behave differently to a "softer" one.

[RW1]

Does anyone know how to reset this?

I have rung VW to ask them to tell me how to reset this, but they insist on me coming in... Which is fine given i have my usual DSG gearbox compliants to harrass them about. At least it's all under warranty for now.

Thanks!

Sometimes you need to do "Basic Setting" on the TPMS and thats why the dealer wants the Golf in the dealership. Its because the ESP unit needs steering angle and tyre info. Until it has the data, it will through a TPMS warning. Alternatively, the Steering Controller comms is intermittant to ESP and may need changing. There may be faults in the 03- ABS controller like 1325, 2757 or 3159.

If you have VCDS, Basic Setting is done on Controller 03 - ABS Brakes. Performed by using measuring block 042 set to Basic Settings and then exit. Do B.S. first and then clear the faults (not the faults first). Faults should change to permanent to sporadic following B.S. and then they can be cleared. That may clear the random warnings unless the steering angle sender from Steering Controller 16 is faulty.

C.

[Martin]

Is the senor monitoring actual air pressure or change in rolling diameter of the tyre (or something else?)?

The actual air pressure is not monitored
The rolling diameter is calculated by watching the left/right wheel RPM via the ABS sensors
When they differ by a set tollerance the alarm goes off
(As RW1 pointed out - steering angles and wheel/tyre info come into play)

When you do the reset it has to get a baseline again.

I had new tyres fitted, same day the tire pressure sensor went off, I just reset it and all was well

One thing worth checking, get your car into a tire shop and up on the hoist
Have a look at the left & right front tires - check for uneven wear
If the wheel alignment is out and the car has scrubbed one side that could set the alarm off

[RW1]

This is not the usual dash switch cancel when it repeats warning randomly for no apparent reason. Resetting with the dash switch after a tyre change or puncture or tyre inflation or geometry change is normal and the switch's use is to be expected.

There is a known fault when it is multiple and random for no obvious reason. It is cleared by the short procedure I wrote above using Basic Settings followed by fault clearing.

[Martin]

Right, which would explain why they want him to bring it in...

[Mi16 Man]

Bloody Friday commute home....got a flat tyre on the main road outta Canberra. I only drove 500m when I could feel the car was sluggish (even checked handbrake was off).

Interestingly, the TPS did not warn me at all. I've RTFM and it states I should've got a warning. Last weekend, got all the tyres to 38psi and reset the values by way of pressing the button in the glovebox.

Anyone else been caught out?

The screw hole is repairable but the Conti CS3 maybe stuffed due to their soft sidewall. That's ok...after 35,000kms and two track days, they are scruffy around the edges.


Got this warning not long after too! And yes, the bulb has blown;

[Tweeked]

This may help explain how the system works...

Volkswagen Tyre Pressure Monitoring System (TPMS) Indirect and Direct | my-gti.com

[Mi16 Man]

Thanks Tweeked! Like checking a dipstick to confirm oil level, the human eye beats a 'system' anyday.......

Cheers
Stu

[Martin]

Mine is the opposite - it's over sensitive
When I got the car it was running 42 PSI and was rather harsh
I dropped it to 38 PSI and got a warning later the same day
Putting the rear tyres onto the front, got a warning later the same day

These warnings took a fair while to occur - probably due to the small RPM difference

[docjames]

my MkV triggered the warning after the tyres were rotated - 7mm + 8mm depth front pair, 4mm rear pair (both).

Weird it didnt trigger.