So, out of the blue about three weeks ago the TPMS lights up and I'm told "check tyres".

Next day I go around and using my inflator all of the tyres take some air - well to be honest I'd not checked the tyres for ages so just assumed they all probably needed air anyway.

Reset TPMS - all fine, until yesterday. Driving back from the shops and I've got the same message once more, so it looks like I've got a slow puncture somewhere.

Of course "check tyres" is the only message I've got. Am I now going to have to go to each tyre and attempt to inflate before I know which one to ask the tyre place to look at for me?

Can't believe that "check tyres" is the only message I can get, where "check NS-R" or "check OS-F" would be 100% more useful!

Edited 21 November, 201510 yr by Stoofa

I had an 11 plate MK2 TSi FL Vrs ( DSG ) and I'm almost certain when this happened to me I got a outline of the car on the Radio and the offending wheel was highlighted in red

Edited 21 November, 201510 yr by Auric Goldfinger

IIRC it was on the maxidot.

All I saw was the yellow light appear, a ding and "check tyres" across the maxidot display. I'd hoped we'd get a car outline and as you said, offending tyre marked.

All the system does is use the ABS sensor to monitor the rotation of the wheel. If it detects a change in the rolling circumference of a wheel as compared to the circumferences it was set at, it will alert you. However the system cannot identify which wheel is the offending one. If all your tyres deflated at the same rate, it wouldn't go off because there would be no change relative to each other. I'm sure someone else will explain it better but main point is that the Octy Mk 2 system doesn't identify the tyre which is deflating.

I think that monitoring the tyres is the only thing you can do. Inflate all the tyres with identical pressure and if there's some leak, you should be able to find out after a day or so.

More information about indirect TPMS you'll have can be found here: http://www.my-gti.com/321/volkswagen-tyre-pressure-monitoring-system-tpms

 

As jevpls said, measuring the tyre pressures manually will be the best way to find the leak though

Two minutes with a tyre pressure gauge? 

+1 for SkodaKitteh

I had this on the first day of ownership. Went to sainsburys (free air!) and pumped them all to 32 psi. A few days later I headed back to Sainsburys and found one of my rears had dropped - I found a screw on the inside shoulder meaning the 7mm tyre was a write off  :(

 

Replaced it today actually. Asda Tyres for a new Goodyear Eagle F1 came in at a good price...

Edited 21 November, 201510 yr by Vegasphil

Oh I know it doesn't take too long to go check all the tyres - I don't have a pressure gauge, so I'll hook my "cigarette lighter" powered inflater up and it'll soon show which one it is.

Just something on the dash would of course make it easier.....especially now it's cold outside

The puncture is definitely slow - 3 weeks it has taken to trigger the system again, so I'm really hoping it can be repaired. Really don't want to replace any of the tyres as they are F1's and all have a good amount of tread on.

The other possibility is a leaky valve or a leak from around the rim - not uncommon on older alloys (especially the Scout Proteus!).

Pre-facelift = Yellow tyre symbol on dash

Facelift = Yellow tyre symbol on dash and warning in maxidot

 

Even with the high version of TPMS you will get the same warning as the facelift above. You then need to go to the TPMS page in the maxidot to see which tyre is low.