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What causes the TPMS warning light to be on?

A number of different factors can cause the TPMS warning light to come on.


The TPMS warning light illuminates if a tyre is detected to be under-inflated by 25% or more. Other factors that may cause the light to come on are listed:

• hitting a curb
• running over a pot-hole
• TPMS corrosion
• high/low external temperatures
• low or depleted TPMS battery life
• improper TPMS installation / TPMS Missing

Many factors affect the pressure in your tyres, and that is why it is so important to be aware of your tyre pressure and regularly inspect the wheels on your vehicle. tyre pressure can be affected due to tyre damage, slow leaks, changes in temperature and from normal daily driving. A drop in temperature of 10 degrees fahrenheit will result in a loss of 1 PSI.

Most vehicle manufacturers install a tyre information label – typically located on the fuel door, drivers door frame, sill or edge. Tyre pressure should be set to this recommendation whilst cold, before driving.

You may find further recommendations from your vehicle manufacturer in the handbook, owners manual or website.

Winter Tyres

If you have recently installed winter wheels and your TPMS Light has illuminated:

  • Check TPMS sensors have been installed
  • Carry out the specified relearn procedure for the vehicle

If you haven’t fitted TPMS to your winter wheels and are looking for the right TPMS call us or shop online.

Published Date: 1st December 2017
Category: Safety, TPMS
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