The tyre pressures in my service menu currently all read zero, despite having the correct pressures in them. All wheels have TPMS valves fitted. I did get a warning about an underinflated tyre which was actually a puncture so the system works. Spare was put on the car and tyre replaced yesterday (spare put back in the boot) and all pressures checked again, but still read zero on the menu. Any idea what the problem / fix is for this? TIA

From WS Manual

As different pressure targets and thresholds for the front and rear tires, the Tire Pressure Monitoring System (TPMS)

can identify the location of the tires. The TPMS system then assigns received tire pressure sensor identification to a

specific position on the vehicle. For example: front left.

The TPMS locates the position of the tire automatically. This function requires no manual intervention by the driver.

The TPMS automatically learns the position of tires on the vehicle if the tire pressure sensors or their positions are

changed on the vehicle.

The tire learn and location process is ready to start when the vehicle has been stationary, or is travelling at less than

20 km/h (12.5 mph) for 15 minutes. This is known as 'Parking mode'. The learn/locate process requires the vehicle to

be driven at speeds of more than 20 km/h (12.5 mph) for 15 minutes. If the vehicle speed reduces to below 20 km/h

(12.5 mph), the learn process timer is suspended until the vehicle speed increases to more than 20 km/h (12.5 mph),

after which time the timer is resumed. If the vehicle speed remains below 20 km/h (12.5 mph) for more than 15

minutes, the timer is set to zero and process starts again.

The TPMS can automatically detect, under all operating conditions, the following:
If 1 or more tire pressure sensors have been replaced.

If 1 or more tire pressure sensor identifications are missing.

If 1 or more ‘alien’ identifications are being received (the TPMS will reject these signals).

DESCRIPTION

Identifications from tire pressure sensors that do not belong to the vehicle.

If 1 of the tires in use on the vehicle have exchanged position on the vehicle.

If 1 or more incompatible tire pressure sensors have been installed.

If the tire pressure sensors installed to the running wheels are changed, the TPMS can learn the new sensor

identifications automatically. The learn function requires no manual intervention by the driver.
The RF transmission from the sensor contains a unique identification code in its transmission data, so that the TPMS

can identify the tire on the vehicle. If the sensor is replaced on a ’running’ wheel, the identification for that sensor may

be programmed into the TPMSCM using a Jaguar Land Rover (JLR) approved diagnostic equipment. That wheel is

not monitored until it is programmed, or until the wheel is learned by the vehicle, which can take up to 15 minutes. The

identification code is on a label with the complete wheel and tire assembly when new and is printed on the casing of

each sensor. 2018 SE SDV8 4.4 Byron Blue

My summer wheels have 315 MHz sensors. Work perfectly with my 2013.

My winter wheels (from 2018 L494) have 433 MHz sensors. They don’t work with the 2013. Sensors work fine as I have a TPMS reprogramming tool.

Is it possible you have this issue? Dan. 🇨🇦 2013 L405 5.0 SCV8

Give them time. They can sometimes through a funny and will then correct themselves. Especially if all you have done is change a wheel / tyres. Check them again after a long drive and suspect all will be well again. 2013 L405 AB 4.4SDV8 Luxor/Ivory, 2007 Vogue TDV8 Epson Green/Sand, 2008 Vogue TDV8 Buckingham Blue/Sand, 2003 Vogue 4.4 LPG Epsom Green/Sage, 1998 Vogue SE 4.6 LPG Epsom Green/Cream

My Wife's F Type told us yesterday that all four tyres are low. - Just a frosty morning. all was well in the afternoon. 405 AB exec seats Baltic and Cirrus
93 RR Classic efi

Remember it's easier to get forgiveness than permission!

Gone in order:
4.4 TDV8 SE - gone to a good home
93 Classic hard dash Plymouth Blue
03 L322 Oslo Blue
2000 Disco TD5 ES Epsom Green
98 P38 Rioja Red
89 Classic Cairngorm Brown