Tyre monitors on the D5

[geckoPK]

Does anyone know how the monitors communicate with the vehicle?

We has a damaged tyre on the front right.

We moved the spare (with a tyre pressure monitor) to the front right and matched it with a new tyre and rim (which does not have a tyre pressure monitor) to the front left. Rear tyres remained as is. We are now getting an error message that the front right tyre pressure is not being monitored....even though it has a monitor. I'd have thought the front left would cause that error message to appear.

Is the technology the same as connecting your phone to multiple devices or will we have to take the vehicle back to JLR every time we change a wheel.

It's going to be a problem because we have a new set of rims with off road tyres fitted (monitors fitted as well) and I can't see us trundling into JLR every time we want to go off road to have the rims reconnected to the system.

[IndusD4]

I think you need to drive the car for at least 5 minutes at over 40kph for the TPMS to pick up any changes.

[geckoPK]

I think you need to drive the car for at least 5 minutes at over 40kph for the TPMS to pick up any changes.

That's been done on numerous occasions since the wheels were swapped a week or so ago.

[SBD4]

Try swapping the front left and right wheels and see if the issue follows. Perhaps the receivers in each wheel well have their wiring switched. You could test further by moving the non pressure sensing wheel to the rear and see what result that gives you.

You definitely don't have to do anything special to register the spare so you won't be needing to worry about the dealer. From the manual:

The TPMS automatically recognises any changes in wheel positions. The vehicle must be stationary for 15 minutes during the wheel and tyre change, to make sure that the system can detect the change. After driving above 25 km/h (16 mph), any deflation warning should clear within approximately 5 minutes.

[WhiteD3]

I recently had a set of 5 new tyres fitted. Had to rotate the spare so that the valve stem as at 9 o'clock and drive 80k to get the TPMS to reset.

[geckoPK]

Hi, Sean,

do you think that would apply with a new set of rims? We've got a different set with our off-road tyres on to save a bit of messing around with tyre changing.

JLR is suggesting that the vehicle can only cope with the five monitors that are the original vehicle and that, if we have a whole new set of rims, the system wouldn't cope....it wouldn't recognise the new set of monitors. Any thoughts??

Regards,
Phil

Try swapping the front left and right wheels and see if the issue follows. Perhaps the receivers in each wheel well have their wiring switched. You could test further by moving the non pressure sensing wheel to the rear and see what result that gives you.

You definitely don't have to do anything special to register the spare so you won't be needing to worry about the dealer. From the manual:

[geckoPK]

I'm beginning to think that the TPMS thinks that the rim on the front left is a 'temporary-tyre' because it doesn't have a monitor. I checked the manual (cough!! Gasp) and the error message is the one that is thrown up when a temporary tyre is used.....a bit of a hint to get the original tyre back on asap, I'm guessing.

Phil

[SBD4]

Hi, Sean,

do you think that would apply with a new set of rims? We've got a different set with our off-road tyres on to save a bit of messing around with tyre changing.

JLR is suggesting that the vehicle can only cope with the five monitors that are the original vehicle and that, if we have a whole new set of rims, the system wouldn't cope....it wouldn't recognise the new set of monitors. Any thoughts??

Regards,
Phil

Hi Phil,

Whatever your rims are (LR/After market), I would expect that the sensors would have to be compatible with the LR system and most likely beyond that have to be LR sensors. Assuming the sensors you have on your 2nd set of rims are compatible I would expect the system to treat them as it would if you were replacing a faulty sensor or even similar to the way it treats a spare being put on the care.

Only way to know is to try it and see what happens.

I'm beginning to think that the TPMS thinks that the rim on the front left is a 'temporary-tyre' because it doesn't have a monitor. I checked the manual (cough!! Gasp) and the error message is the one that is thrown up when a temporary tyre is used.....a bit of a hint to get the original tyre back on asap, I'm guessing.

Phil

Yes, that's exactly right. I was thrown by the fact that the system was saying the front right was not being monitored rather than the front left which I understand to be the position of the wheel without the tyre pressure sensor. Hence the suggestion to move the non-sensing wheel around the vehicle to see what messages you get.

[geckoPK]

Hi, Sean,

From today's discussion with the JLR dealer, it would seem that the system can only tolerate the 5 coded monitors issued with the vehicle. If we wanted to recode the vehicle to accept the new monitors on the off road rims, the current codes would have to be deleted from the system and the new ones added. The problem arises when we want to swap the off road wheels back to the on road rims. Without firm confirmation from JLR at this stage, it would appear that the old codes would not be accepted because the system regards them as 'having been replaced' ie damaged, stolen or whatever.....similar to a key or radio being replaced.....they cannot be transferred to another vehicle or be re-introduced to the original vehicle. So, no matter what we try, there will always be a set of rims that will not be recognized or monitored. If this proves to be true, I guess we'll have to look at an after market tyre pressure monitoring system that links to a phone rather than the vehicle's system. I guess they're out there.

The problem with the error message regarding the non- monitored wheel on the LHS, was an issue outlined in the manual. It was a 'generic' message to alert you to the fact that you have a 'temporary tyre' in place (Which our vehicle interpreted it as) and needs to be dealt with asap.

Thanks for the time you've spent discussing this problem. Technology/customer wins/loses again.

Regards,
Phil

Hi Phil,

Whatever your rims are (LR/After market), I would expect that the sensors would have to be compatible with the LR system and most likely beyond that have to be LR sensors. Assuming the sensors you have on your 2nd set of rims are compatible I would expect the system to treat them as it would if you were replacing a faulty sensor or even similar to the way it treats a spare being put on the care.

Only way to know is to try it and see what happens.




Yes, that's exactly right. I was thrown by the fact that the system was saying the front right was not being monitored rather than the front left which I understand to be the position of the wheel without the tyre pressure sensor. Hence the suggestion to move the non-sensing wheel around the vehicle to see what messages you get.

[4bee]

Speaking of which, this has just landed on my screen.

Make of it what you will.Mini Bluetooth ELM327 Car Diagnostic Scanner for Android - Kogan.com