These instructions apply to the BMW 1 Series Mk3 (F40) 2019-Present.
For other models, please choose your vehicle here.
If the tyre-pressure warning is on in your BMW 1 Series Mk3 (F40, 2019–present) after adjusting pressures or changing wheels, you set the current pressures as the new reference through iDrive, then confirm with a short drive. The alert is not necessarily a fault — more often it simply means the pressures have changed since the system last stored its reference, whether from a top-up, a wheel swap or a cold spell. Here’s how.
How the F40 Monitor Works
Rather than expecting a fixed number, the F40’s tyre-pressure monitor learns whatever pressures are in the tyres when you reset it and treats those as “correct.” From then on it watches for a meaningful drop against that stored reference. That is why the reset order matters: inflate to the right figures first, then reset, so the baseline it memorises is the one you actually want it to defend.
Set the Pressures First
Inflate all four tyres cold to the figure on the label in the driver’s door opening (BMW lists pressures by load — use the right values).
Getting Ready
- Set the pressures with the tyres cold and check all four, including the one that looks fine.
- Read the load-dependent figures on the door-jamb label — a lightly loaded car and a fully loaded one use different values.
- Have the ignition on so iDrive is fully awake before you open the menu.
- Plan to drive off straight after resetting — the F40 finishes learning on the move, not while parked.
How to Reset the F40 TPMS
- With the ignition on, open iDrive and go to the ‘CAR’ / Vehicle menu.
- Select ‘Tyre Pressure Monitor’ (tyre pressures).
- Choose ‘Perform Reset’ / ‘Reset’ and confirm.
- Drive off — the system learns the new pressures as you drive and the warning clears.
If the Warning Stays On
- Re-check every tyre, including the spare if it’s a monitored full-size wheel.
- Confirm you selected ‘Perform Reset’ and then drove — resetting alone, without a short drive, may not complete the learn.
- Cold morning? Pressure falls with temperature; top up to the door-label figure and reset again.
- One tyre keeps dropping — look for a slow puncture; the system is doing its job.
- After a seasonal wheel change the reference must be re-stored, so reset once the new pressures are set.
- A steady-flashing TPMS light points to a sensor fault and needs a tyre shop’s tool.
What Happens Next
Once you’ve reset in iDrive and driven a short distance, the warning should go out and stay off for the trip. The monitor keeps comparing live pressures against the baseline you stored, so if a tyre later loses air the alert comes back — treat that as a prompt to check that corner rather than a failed reset.
Frequently Asked Questions
Where is the tyre-pressure reset on the F40?
In iDrive: CAR/Vehicle → Tyre Pressure Monitor → Perform Reset, then drive. The reset lives in the vehicle settings section of the menu rather than under a physical button, so set your pressures first, confirm the reset on screen, and pull away to let it complete.
Do I need a tool?
Not for a normal reset — set the pressures, reset in iDrive, and drive. A tool is only needed if sensors were replaced.
Why did the light come on in the cold?
Pressure drops with temperature. Top up to the door-label figure and reset.
The light keeps flashing — low pressure?
A persistent flash usually means a sensor fault rather than low pressure — have the sensors checked.
Do I reset after adding air to just one tyre?
Yes, it’s worth doing. Because the F40 stores whatever pressures were present at the last reset, correcting one tyre and then running the reset makes sure the baseline reflects all four at their proper figures. Skipping it can leave the monitor comparing against an out-of-date reference and re-triggering the warning.
If a fault code is stored, look it up on autodtcs.com. To clear a service reminder, see our 1 Series F40 service reset guide.
Independent guide — not affiliated with BMW. Always follow your official service manual and safety precautions. Read our full disclaimer.