Apaseal- The leading tyre maintenance supplier for over 60 years

TPMS FAQs

Sensors and Service Kits
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Q: What is a service kit?
A: A service kit contains:
1 cap
1 core
1 rubber grommet
1 nut
And 4 coloured rings (Renault)
1 zinc coated seal washer (VDO)


Q: Why do I need a service kit?
A: We recommend that you should replace the cap, core, grommet and nut every time a TPMS sensor is removed from the wheel or the wheel is serviced. Worn component parts can cause serious problems. Replacing the critical valve component parts every time ensures an air tight seal allowing the TPMS to function properly.

Q: Are all sensors the same?
A: No all sensors vary. There are some sensors that are for several different makes and models of cars but it is important to make sure the sensor is the exact one for your vehicle.

Q: Which sensors are due to fail this year?
A: Sensors that were installed in 2003 will be due to fail this year if the battery has lasted the full 7 years.
Audi A8
Bentley Continental
GT (614)
Ferrari Enzo (F190)
Nissan Primera
Porsche Carrera GT
Renault Megane II


Q: Which sensors are due to fail next year or could possible fail this year?
A: These vehicles had sensors installed from 2004 (these sensors are likely to fail this year):
Audi A4 (B7)
Audi S4
Audi A6 (C6)
Citroen C5 II
Ferrari 612 Scaglietti
Maserati Quattroporte
Mercedes CLS (C219)
Mercedes SLR (R199)
Vauxhall Vectra
Vauxhall Signum
Vauxhall Astra H
Vauxhall Zafira
Peugeot 407 & 407 SW
Peugeot 607 II
Porsche 911 Carrera/ Targa/ Cabrio (997)
Renault Scenic II

Q: What other sensors may be due to fail in the near future??
A: These vehicles had sensors installed from 2005 (these sensors will fail within 0-36 months):
Audi RS4
Audi Q7
entley Con. GT (614)
Bentley Con Flying Spur (611)
Citroen C4 &C4 Hatchback
Citroen C6
Citroen C8
Ferrari F430
Fiat Ulysse Nuovo
Mercedes CLS (W219)
Mercedes E-Class (W211)
Mercedes M-Class (W164)
Mercedes R-Class (W251)
Mercedes S-Class (W221)
Mercedes SL (W230)
Peugeot 407 Coupé
Peugeot 807
Porsche Cayman
Porsche Boxter (987)


Q: I can't find my vehicle listed on your site - What do I do?
A: We are constantly updating our site with new vehicle listings but there may be a chance that we haven't got to your vehicle yet. Please drop us an email or give us a call and we will be happy to advise you on the correct sensor for your vehicle and how many we have in stock.

Q: Will my new sensor learn automatically or do I need to have it activated/triggered?
A: On the item description it will tell you whether or not the sensor relearns automatically. If you are still unsure or would just like to check it over with a real person, give us a call on 0844 2510503 and we will be happy to help. 

Q: My valve has just broken! Is it possible to just replace the valve part of the sensor rather than the whole sensor?
A: This really depends on what sensor you have on your vehicle. Some sensors have the valve as a seperate part, whereas other sensors come as one fixed piece with the valve. If you search for your sensor on our site, you should be able to tell from the image provided whether the valve is attached to the sensor or not. If you are still unsure or you would just prefer to speak to a real person, give us a call on 0844 2510503 and we will advise you.