Hi, I’ve got a 2018 Karoq Edition 2.0tdi 4x4 with a regular false alert from the TPMS, sometimes any single tyre or all 4 tyres at once, been in dealers 7 times and Skoda Technical involved but unable to find what’s causing it, any ideas please?

I had a really slow puncture on my front passenger side wheel last year, the pressure loss was only 5psi in three weeks so easy to miss.  Depending on what I was driving over at the time the pressure had fallen below the threshold, it would trigger one or more of the sensors.  Have you manually checked the pressures over a couple of weeks to see which wheel could have the issue?  If I understand correctly the TPMS is linked to the ABS system in the Karoq, so if there was a faulty sensor then the ABS would also report a fault.

Tyre pressures checked weekly and are as specified, Skoda Technical sent a tool to dealer to check ABS rings, all ok, dealer said ABS will work ok even if fault with TPMS, 

As for Klamath & further to my separate recent fuse topic, I only discovered a very slow puncture in front RHS tyre, due to that TPMS and this led to me realising the electric pump provided with the car causes the cigar lighter fuse to blow.  The helpful local Walthamstow Skoda dealer suggests I take the pump in for them to look at - it can be a fault in the plug - but looks OK.  I shall in due course,  but not going anywhere just now as the very good  .gov.uk interactive coloured UK map shows this new Covid variant is growing alarmingly around here. 

 

2nd time round after being wised up, I was careful not to insert the plug at an angle as otherwise I'm told this can blow the fuse - but fuse still blew.  I've a 2nd older pump to keep the tyre inflated, until I feel it's safer even to get the tyre fixed.

@W9XER Welcome to the forum.

 

Can we assume that since the car has been at the dealers 7 times, the TPMS is getting correctly reset each time that it is being looked at and when you are checking the tyre pressures?

Yes it’s getting reset as in handbook by myself, if it’s gone into dealer with light on, no fault is showing up on diagnostics. 

@W9XER

You are obviously pretty familiar by now with the tyre sidewalls.  What are the tyres and size on the car.

 

Have you checked each tyre to be sure all 4 match for speed / load rating?

?

What do Skoda UK & the Dealership intend doing now to resolve the fault that has no fault code being logged and that their finest can not diagnose what the fault is?

This might sound daft, but check all the tyre depths, and if not the same, might be worth swapping wheels front-back (or diagonally if not directional tyres).  I take it that any differences in tyre type (if any) would have been spotted already.

 

Once came across a case of someone who got false readings, when driving along roads with lots of big puddles, what I think was happening was the puddles were cooling the tyres on that side, thus the temperature-volume-pressure ratio was changing.  Didn’t occur in dry weather.

The Ops comment that it can be any tyre or all 4 does suggest a system fault, detecting all 4 tyres together is a new one on me.

 

 

Edited 29 December, 20205 yr by SurreyJohn

Hi, they’re the original Bridgestone Dueller HP Sport tyres 225/45 R19 92V

Dealer and Skoda Technical have no idea now they check everything and reset it and just say “hope it doesn’t come on again “, they’ve even told me to ignore it!!

5 hours ago, W9XER said:

Hi, they’re the original Bridgestone Dueller HP Sport tyres 225/45 R19 92V

Dealer and Skoda Technical have no idea now they check everything and reset it and just say “hope it doesn’t come on again “, they’ve even told me to ignore it!!

Dealer told you that...  Hmmmm.  Get it in writing mate.  

If you ever did have a slow puncture, say on the motorway at 70mph and you were told to ignore it then, if you had an accident then they might be laying themselves open to being liable for any damage and/or injury.

I suspect they will not confirm it - in which case tell them to sort it.  It is a safety feature that is there for your own safely not their inconvenience.  If necesssary they can replace all the sensors and the wheels (and the tyres if the sensors can't cope with thier supplied tyres).  Don't let them fob you off. You never know when you might be grateful for that sensor.

Also,  If its going back with no fault showing (when they run a full computer diagnostic) and the light is physically on at the time then could it be a faulty light?  I'm no expert but if the light is actually on and the light is controlled by the computer(s) in the car then there must be some record of what turned the light on / what is keeping the light on.  If not it can only really be a wiring loom fault or a light switch fault I would have naively thought.  

 

Maybe im being too simplistic :-)

 

Also also,   see this: https://www.tyresafe.org/tyre-pressure-monitoring-system/#:~:text=The Law,pressure monitoring system (TPMS).&text=In the UK on 1,result in an MOT failure.

 

Now... this is only my "google" knowlege on the matter and we all know about fake news and the fact that Google is not infallible but.......

 

My recieved understanding is that 

• TMPS is a legal requirement 
• It is safety related
• They should be compelled to fix it without delay at the next visit otherwise they are allowing you to drive a car that they knowingly know is not roadworthy as its an MOT failure if it is not operating correctly.
• A car has to be roadworthy at all times and not just when an MOT is done. That is the law.
• Telling you to ignore a TPMS warning light might be seen as somewhat illegal ???

 

Maybe you can report it to the authorities (or threaten to do so) and they "might" be compelled to issue a safety recall if they really can't fix it.  That might spur them into some actual action rather than their "all too common" mindset of "lets fob the customer off"       :-)

 

 

Edited 29 December, 20205 yr by smipx

Hi, i have told them i want all parts of system replacing but they won’t, they said it isn’t recorded anywhere  what causes light to come on, we have been doing 70mph on motorway and ‘ping’ all 4 tyre pressures has come on, just had my winter tyres fitted today so that should eliminate whether its tyres, i was going to swop it for a 1.5 DSG in new year but wife doesn’t want another skoda because of this problem. 

That's shameful. I don't blame your wife. 

18 hours ago, smipx said:

Also also,   see this: https://www.tyresafe.org/tyre-pressure-monitoring-system/#:~:text=The Law,pressure monitoring system (TPMS).&text=In the UK on 1,result in an MOT failure.

 

Now... this is only my "google" knowlege on the matter and we all know about fake news and the fact that Google is not infallible but.......

 

My recieved understanding is that 

• TMPS is a legal requirement 
• It is safety related
• They should be compelled to fix it without delay at the next visit otherwise they are allowing you to drive a car that they knowingly know is not roadworthy as its an MOT failure if it is not operating correctly.
• A car has to be roadworthy at all times and not just when an MOT is done. That is the law.
• Telling you to ignore a TPMS warning light might be seen as somewhat illegal ???

 

Maybe you can report it to the authorities (or threaten to do so) and they "might" be compelled to issue a safety recall if they really can't fix it.  That might spur them into some actual action rather than their "all too common" mindset of "lets fob the customer off"       :-)

 

 

 

MoT Inspection manual says in Section 5.2.3. Tyres  (https://www.gov.uk/guidance/mot-inspection-manual-for-private-passenger-and-light-commercial-vehicles/5-axles-wheels-tyres-and-suspension#section-5-2-1)

Tyre pressure monitoring system (TPMS)

The inspection of the tyre pressure monitoring system (TPMS) is for M1 vehicles first used on or after 1 January 2012.

The TPMS warning lamp (see diagram 3) can operate in many ways depending on the vehicle type. You must only reject vehicles if it’s clear that the lamp indicates a system malfunction and not simply indicating that one or more of the tyre pressures is low.

Diagram 3. Example of a TPMS warning lamp

 

 

Note the bit "only reject vehicles if it’s clear that the lamp indicates a system malfunction". 

 

Various thoughts:

 

Escalate to Skoda HQ

 

Get it in writing that this is not a system malfunction and the dealer indemnifies you against a MoT failure on this point

 

Get it in writing that you should ignore it

 

Is your insurance valid driving with this warning light on?

 

Good luck

 

tom

 

 

 

 

Edited 30 December, 20205 yr by Sanqhar

and, as you are going to trade it in at some point fairly soon, also indemnify you against any loss in "trade-in" value as there is a known fault and the person you are selling it to might become aware ?!?