Possible error with tyre pressure warning light

[romeogolf]

Before I take the car to a dealer and look like an idiot I want to check that I've not missed something!

Had a slow puncture on one tyre and it was repaired yesterday. I left the garage and (annoyingly) realised they'd not inflated the tyre correctly. I pulled into a petrol station to top it up and got back on the road. Although the pressure monitoring system shows the correct pressure (280kPa) on both the rear tyres, the one which was repaired is highlighted in orange and the warning to "check pressure" is still on.

I can't find a reset control, and in the past when I've had a low tyre it resets itself after being refilled. Any clues?

Thanks!

[kambites]

This might be a stupid comment, but if there's a reset button the handbook will tell you where it is. It could well be buried deep in a menu somewhere.

[Nick NE]

If it's the Mercedes on your profile you're talking about, I think it's in the menu under "Service", then "Tyre Pressure" - use the buttons on the left on the steering wheel to access. Make sure the pressures are right then tell the car that those are the values you want it to work from. And then drive it and the system should reset.

Good luck!

[romeogolf]

Nick NE said:

If it's the Mercedes on your profile you're talking about, I think it's in the menu under "Service", then "Tyre Pressure" - use the buttons on the left on the steering wheel to access. Make sure the pressures are right then tell the car that those are the values you want it to work from. And then drive it and the system should reset.

Good luck!

It is, and I've gone to that menu. It shows all the pressures but the only option is to view them. There's no reset! (Spent 10 minutes in the drive yesterday pressing every button in various combinations!)

Feel like it's a dealer-call.

[romeogolf]

kambites said:

This might be a stupid comment, but if there's a reset button the handbook will tell you where it is. It could well be buried deep in a menu somewhere.

I might have to delve into it. It's like War and Peace in seven languages.

[Nick NE]

romeogolf said:

It is, and I've gone to that menu. It shows all the pressures but the only option is to view them. There's no reset! (Spent 10 minutes in the drive yesterday pressing every button in various combinations!)

Feel like it's a dealer-call.

Try this - when you see the pressures displayed, try scrolling down (the button below OK) and see if "Use current pressures" appears - if it does, press "OK" again and it should start the process.

Good luck (again)!

[romeogolf]

Nick NE said:

Try this - when you see the pressures displayed, try scrolling down (the button below OK) and see if "Use current pressures" appears - if it does, press "OK" again and it should start the process.

Good luck (again)!

Perfect, this fixed it thank you. Not sure how I managed to miss that button every other time I tried, but at least it's working now.

[Nick NE]

Excellent - nowt's simple anymore, is it!

[VetteEd]

Used to get spurious low tyre pressure warnings all the time in my old C6 Corvette. I found the only way to clear the fault light was to stamp on the loud pedal and give it some beans; great way to re-set tyre sensors.

[phumy]

Try putting an extra 4 or 5 psi in, leave it for 10 mins or so then drop it to your normal pressure.