Tyre pressure warning light

[thewharftrader]

Hi,
I just got my 2 rear tyres changed and as I set off, I noticed my tyre warning light was on. Sadly I could not turn back as it started to snow heavily and I wanted home ASAP (as it turned out it was a journey from hell but thankfully made it back in one piece).

Does it mean that the wheels have been put on the wrong corners?? There is a red light under the glovebox. That is surely not a good sign! Its really annoying as it means I cant see my digital speedo, etc!

Thanks all. I ave searched both this forum and the manual to no avail!

[rick-derby-]

hi it sounds like one of the sensors has been damaged, pressing read on the radio console will allow you to see your digital display again but will be needed to be done each time you start the car, It is possible to disconnect the system so no more warnings are shown until you get time to have it repaired

[thewharftrader]

Thanks Rick!
How easy is it to repair? I guess I should go back and complain.
Could it be that the wheels are on the wrong tyre?

[goldblum]

thewharftrader said:

Thanks Rick!
How easy is it to repair? I guess I should go back and complain.
Could it be that the wheels are on the wrong tyre?

D'you the tyres are on the wrong wheel? No

I imagine either the sender unit in the alloy has been damaged or the valve is leaking or you have been major-league unlucky and picked up a nail..Have you checked

the tyre pressures yet?

[thewharftrader]

Is there any quick way of checking (without taking the wheel off) if they are on the wrong corner?

I'm hoping it is that simple but it sounds like Rick was suggesting that this was not the case.

[goldblum]

thewharftrader said:

Is there any quick way of checking (without taking the wheel off) if they are on the wrong corner?

I'm hoping it is that simple but it sounds like Rick was suggesting that this was not the case.

I'm pretty certain it doesn't matter which side of the car you put the tyres on,left or right doesn't matter

as long as the writing on the side of the tyre is on the outside then you're good to go!Both back tyres will be exactly the same!!

However the sensor is in the ALLOY,not the tyre.Check your tyre pressure.If the tyre pressure is good but you still have a warning then the sensor is at fault.

[thewharftrader]

Fr some reason I thought the tyre sensors were corner specific so if they have put the wrong alloy on the wrong wheel, then it would create an error. Could easily be wrong though.

Tyre pressures are all fine...

[goldblum]

Do you still have the warning light?

[thewharftrader]

Yip. Got all the way home with it and even when I restarted, I still do.
very annoying!!

[goldblum]

thewharftrader said:

Fr some reason I thought the tyre sensors were corner specific so if they have put the wrong alloy on the wrong wheel, then it would create an error. Could easily be wrong though.

Tyre pressures are all fine...

' wrong alloy on the wrong wheel,'

Ah I see.No.When you buy new radio senders for your cars tpw system they will NOT be location specific.The computer in your dash will read where the signal is

coming from.Try re setting the system and if that doesn't work can you switch it off?

[thewharftrader]

Sorry for the confusion between tyres, alloys and wheels!!

Any ideas how to reset the computer?

[goldblum]

I'm afraid I can't help you on that one as I don't know the OS on an Astons dash computer.

I imagine something like setup/car - TPWS - Tyre pressures - reset.Good luck!

[Astontec]

if you unplug the monitor that will restart it but wont make any difference. i work in a main dealer and i see to often people having tyres done at tyre places and breaking valves. even if the wheels are round the wrong way this wont make the light come on but if you want to check look at the valve and there will be a coloured ring. Did you have the correct tyres fitted? am9?

Green o/s/f
blue o/s/r
yellow n/s/r
red/n/s/f

[rick-derby-]

Astontec said:

if you unplug the monitor that will restart it but wont make any difference. i work in a main dealer and i see to often people having tyres done at tyre places and breaking valves. even if the wheels are round the wrong way this wont make the light come on but if you want to check look at the valve and there will be a coloured ring. Did you have the correct tyres fitted? am9?

Green o/s/f
blue o/s/r
yellow n/s/r
red/n/s/f

I do not want to start an argument but not all Aston dealers change their own tyres and many use local tyre firms so it may not be the trained Aston tech actually changing the tyre and personally how many technicians are trained in changing tyres I have a c&g in car and commercial tyre fitting but I would still use a local tyre specialist who change hundreds a week rather than someone who changes less than a hundred a year experience is everything and some tyre shops do use young lads with very little experience but in every town and city there are some very experienced teams and with all the care taken mistakes and accidents do happen (I am guilty of this as are my team)on the earlier cars disconnecting the tpms will disable any warnings, it is only the latest cars that will still show a fault with the system, fitting a wheel in the wrong position will not show a fault on the display but will give incorrect info on which wheel is at fault, reference the am9 rating these do have a stiffer side wall, and if mixed on the same axle cause instabilities which are dangerous, but in real world usage between am9 and the standard re050 most people in normal driving conditions including myself would not be able to tell the difference and I have tried,

[MichaelV8V]

I've been in to have tyres changed and the first thing they did was rip off the valve with a sort of forked crowbar thing, so the tyre deflated nice and quickly. If they did that with your complex tyre pressure sensor valve, then they probably threw away the radio sensor that will have dropped into the wheel.

First thing to check is the look of the valves and the coloured rings round each, if it looks like they fitted standard rubber valves, then you need to call them to get them to find your pressure sensors and get them refitted into the wheel, with the right type of valve.

[goldblum]

MichaelV8V said:

I've been in to have tyres changed and the first thing they did was rip off the valve with a sort of forked crowbar thing, so the tyre deflated nice and quickly. If they did that with your complex tyre pressure sensor valve, then they probably threw away the radio sensor that will have dropped into the wheel.

First thing to check is the look of the valves and the coloured rings round each, if it looks like they fitted standard rubber valves, then you need to call them to get them to find your pressure sensors and get them refitted into the wheel, with the right type of valve.

The sensor is inside the alloy.The valve is (largely) worthless.At least that's the norm on most cars.

[rick-derby-]

On the Astons the valve is not the standard rubber type (tr413 etc)but a bolted in aluminium valve with the sensor attached to the bottom of the valve, and when ordered only comes a s a complete assembly currently,

[goldblum]

You're saying then if a valve head decays and lets air out of the tyre you have to buy a whole new valve/sensor? Seriously?

You AM boys have too much cash!

[oldboyswithtoys]

first thing to check is what message is on your display
if tyre system fault comes up it is probably a broken valve
if check tyres is displayed it is probably a pressure issue. if your tyres were fitted at a local tyre shop rather than an am dealer do they know the correct pressures?
i also work at an am dealer who used to use a local tyre shop but we now fit our selves as we are trained we know the correct pressure and torque figures for your wheels and we can source the correct tyres (am9) for your car at a much better price than most places can supply non standard tyres

[Astontec]

rick i think you find when aston had problems with dbs tyres they made all dealers that fit tyres have training. i never said that everyone has training in aston dealers but if you know whats there when fitting tyres then you will be more careful not to break them