These instructions apply to the Land Rover Defender Mk2 (L663) 2020-Present.
For other models, please choose your vehicle here.
If the tyre-pressure warning has come on in your Land Rover Defender (2020–present) after you’ve adjusted the pressures or changed a wheel, it’s usually doing exactly what it should — flagging that at least one corner is reading below the stored reference. On this generation the system is largely self-managing: set the pressures correctly and the warning clears on its own, with no reset button to press. A lit TPMS lamp on its own is a pressure notice, not a sign the car is unsafe to move, but it’s worth sorting before a longer drive. Here’s how it works.
How the System Works
The Defender uses direct sensors in each wheel that report the actual pressure inside every tyre. Because the car is reading real numbers rather than comparing wheel speeds, there’s no reset button and no learn drive to force — once the pressures are correct, the system recognises them and the warning light goes out (it may take a short drive for the sensors to transmit and confirm). The same direct sensors are what let the Defender show a live per-wheel pressure readout on the touchscreen, so you can watch each corner come up to spec as you inflate.
Before You Begin
- Check the tyres cold — before driving, or at least a couple of hours after, so heat build-up doesn’t give a falsely high reading.
- Find the placard figure on the driver’s door shut, and note that the Defender lists different pressures for normal vs. full-load/off-road use.
- Have an accurate gauge and a pump to hand — forecourt airlines vary, so a known-good gauge is worth using.
- Don’t forget any tyre you’ve moved, including a swapped or repaired wheel.
Clearing the Warning
- Check the tyres cold where possible.
- Set all four tyres to the correct pressures (placard in the driver’s door shut or handbook). The Defender lists different pressures for normal vs. full-load/off-road use — use the right one.
- Switch the ignition on; with the pressures correct, the warning light should go out.
- If it doesn’t clear immediately, drive for a few minutes so the sensors report.
If the Warning Stays On
- Recheck every tyre — one corner just a few psi below spec is enough to keep the warning on.
- Use the right load/terrain setting from the placard; a normal-use figure on a fully-loaded truck can read low.
- Give it a short drive — the sensors only transmit when the wheels are turning, so a stationary check may lag behind.
- Watch for a slow puncture — if one tyre keeps dropping after you set it, have it inspected for a leak or a nail.
- After a wheel swap, make sure the fitted wheel actually carries a working sensor and that it’s reading on the per-wheel display.
- Still lit with correct pressures? A sensor may have a flat internal battery or fault — look up the code on autodtcs.com.
After the Reset
With every tyre at the correct cold pressure, the amber warning should clear within a short drive and stay off for the rest of the journey. Because pressures fall naturally in cold weather and over time, it’s normal for the lamp to reappear after a cold snap or a few weeks — that’s the system doing its job, not a fault. A quick top-up to the placard figure clears it again.
Frequently Asked Questions
How do I reset the tyre pressure warning on a Defender?
Set all tyres to the correct cold pressures from the door-shut placard, then switch the ignition on. The system reads the actual pressures and the light goes out on its own, possibly after a short drive so the sensors can transmit. There’s no reset button to press.
Why is there no reset button?
The Defender uses direct sensors that measure the real pressure in each wheel rather than comparing wheel speeds. Because it knows the true value at every corner, it doesn’t need you to teach it a baseline — it simply clears itself once the pressures are back within range.
Why won’t the light go out?
Usually one tyre is still below spec, or the wrong load/terrain figure has been used. Recheck all four cold, confirm you’ve set the correct normal or full-load pressure, then drive a few minutes so the sensors report. A tyre that keeps dropping points to a slow puncture rather than a system fault.
Do I need a tool?
Not for a normal reset — setting the pressures is all it takes. A tool is only needed if a sensor has actually failed: a replacement has to be fitted and matched to the vehicle, which is a workshop job.
Does the light stay off after off-road use?
If you dropped the pressures for sand or rock and then reinflated for the road, set every tyre back to the correct on-road figure. The warning clears once all four are at the right pressure again; just make sure you’ve used the on-road, not the reduced off-road, numbers.
The light came on in cold weather — is that normal?
Yes. Air contracts as it cools, so a cold morning can drop pressures enough to trip the warning even though nothing is leaking. Top every tyre back up to the placard figure and the lamp clears; it’s the most common harmless cause of a Defender TPMS light.
If the warning came on with other lights, decode the code on autodtcs.com.
Independent guide — not affiliated with Land Rover. Always follow your official service manual and safety precautions. Read our full disclaimer.