Hi All,

Skoda Superb Mk3 - 17 Plate.

The tyre pressure dashboard sensor keeps coming on after a few miles, although all the pressures seem to be ok when checked, or they are within a half a PSI of being correct. The dashboard light comes on, flashes for about a minute then stays on. Could this be a sensor fault, and if so how do I find which one of the 4 it is?

I have checked the owners manual but cannot fathom out how to locate this particular piece of information in the cars system, if indeed it is there.

Any advice would be much appreciated.

Many thanks.

Your car 99% will not have TPMS sensors in the wheel and instead it is done off the rolling circumference of the wheels via the abs sensors.

 

Please set all the pressures and then make sure you go into the infotainment system and reset the sensors. You need to do this or it will keep having errors.

 

Second thing to check - have you had tyres replaced recently? Just make sure they are all the exact same size.

As above, and note that a Carlos Fandango Megagrip Drift may be a different diameter to a Woosung Dark Spin, even if they're both declared as, say 235/35R17Z

You do not mention, but are you pressing the set button till it bleeps after you’ve checked the pressures?

The tyres do not need to be the same size front to rear.  Unless fitting 4 brand new matching tyres they almost certainly will not be.

Have the same size in the same axle.   Reset the tyre pressures and reset the TPMS. 

 

Tyre fitters will say that new tyres need to go on the rear.

So the tyres on the front that are not new, or the old rears moved to the front will not be the same total circumference as the brand spanking new rears.

Maybe near enough.

 

PS.

Plenty VW Group cars can get a Spare wheel fitted, odd one out by total diameter / circumference and reset the TPMS and get no warning.

Some cars might, and the CC or ACC will be disabled.  

Edited 17 January, 20233 yr by toot

Hi All,

Thanks for the quick responses.

ApertureS - make sure you go into the infotainment system and reset the sensors - I have reset, and pressed confirm, the Tyre pressure loss indicator a number of times but to no avail. But thanks for the rolling circumference info, it would explain why I cannot find any info on the TPMS sensors themselves in the infotainment system. So I assume there are no actual sensors on the wheel which could be faulty?

 

Indirect TPMS uses the ABS wheel speed sensors, if one of these were failing I'd expect lots and lots of warnings as many systems rely on their data.

 

If the system keeps going off, it might be worth checking all four tyres are correctly balanced, the alloys are true and there is no damage to the tyres. Any of these could cause issues.

 

Sometimes, it can just be the road surface that will trigger it but it's rare

Sometimes it can be a wheel bearing over heating or a brake caliper not releasing and the wheel gets hot and the tyres pressure changes.

 

So you check the pressures later or when cold and they are OK.

If you can stop and feel if the wheel is hot and check the tyre pressure then you can sometimes find that to be the issue, and check the pressure on the opposite side.

Edited 17 January, 20233 yr by toot

to avoid guessing what's wrong, i have installed dTPMS

alternative set, independent to car's system

-> https://www.briskoda.net/forums/topic/434028-tire-pressure-monitoring-system/?do=findComment&comment=4893182

 

 

there is info how to install OE set, integrated to car's system

-> https://www.briskoda.net/forums/topic/488740-my17-superb-retrofitted-with-direct-tpms/

 

4 hours ago, toot said:

PS.

Plenty VW Group cars can get a Spare wheel fitted, odd one out by total diameter / circumference and reset the TPMS and get no warning.

Some cars might, and the CC or ACC will be disabled.  

 

I've had three punctures thus far in the first 3 yrs of ownership - each time I had to put the 16" spare on, and each time the ACC would get disabled.

 

I've since got myself a full size 19" spare.

....and now that I have, I haven't had any punctures since!!!! 🤣

51 minutes ago, JR RS said:

I've since got myself a full size 19" spare.

....and now that I have, I haven't had any punctures since!!!!

me to "can't" test full diameter spare wheel

replaced OEM 205/55r16 by custom 205/65r16 in far 2017.

i'm glad i retrofitted the direct tpms (with sensors inside each wheel) as it is nice to b able to c the tyre pressures live at any time, without having to take the tyre gauge out n checking it monthly.

 

 

@JR RS That was why i mentioned the CC and ACC. 

 

Because of the last discussion in threads on the exact same subject and then the same points on upgrading of the TPMS and the Spare / Emergency Spare. 

(People should remember that a Brand New never used tyre in the boot that is a spare is a green tyre and should not just be fitted and run from the start as a matched tyre, 

and that if sitting with a higher pressure in the boot, the pressure needs adjusted to match the one on the other side, and reset the TPMS.)