These instructions apply to the Alfa Romeo 4C Mk1 (960) 2014-2018.
For other models, please choose your vehicle here.
If the tyre-pressure warning has come on in your Alfa Romeo 4C (2014–2018) after you’ve adjusted the pressures or changed a wheel, the 4C uses an indirect system — there’s no sensor in each wheel, so you reset it by storing the new pressures and driving. The light isn’t a fault in itself: it means the wheels are no longer turning at the even rate the car last saved as correct, which is what happens after a top-up, a wheel change, or a cold spell. Storing a new baseline and completing a short drive clears it. Here’s how.
How the 4C’s System Works
The indirect TPMS watches wheel-speed data to spot a tyre going soft, so after any pressure change you tell it the new pressures are correct, then let it learn them on the move.
Because it has no direct pressure reading of its own, it depends entirely on the baseline you store and the learn drive that follows. A soft tyre rolls at a slightly smaller diameter and turns marginally faster than the others, and that mismatch is what the car flags. Reset it and it starts measuring from your new, correct pressures again.
Before You Start
- Set every tyre cold to the placard / handbook figure for your wheel size before you store anything.
- Remember the 4C is staggered — the rear tyres are wider and take a different pressure from the fronts, so check each axle separately.
- Confirm the tyres are the correct size and type before you save them as the baseline.
- Switch the ignition on with the car stationary to reach the tyre-pressure menu.
- Plan a short, steady drive afterwards so the system can learn the new pressures.
Resetting the System
- Park level and set all four tyres to the correct cold pressures (placard / handbook figure for your wheel size).
- Switch the ignition on and confirm/reset the tyre-pressure setting in the menu where offered.
- Drive for about 20 minutes at over 25 km/h (15 mph) — the new pressures are then stored as the baseline.
If the Warning Stays On
- Recheck every tyre — one below spec keeps the warning on, and the lowest corner is easy to miss.
- Complete the learn drive — short trips may not be enough for the system to settle the new baseline.
- The 4C is staggered (wider rears) — make sure each axle is at its correct pressure.
- Re-store after a wheel swap — fitting a different set moves the reference, so reset and re-learn once they’re at the right pressure.
- Allow for a cold morning — pressures fall overnight, so top up cold and reset if the light appears in cold weather.
- Suspect a slow puncture if one corner keeps dropping after you set it; have that tyre checked for a nail or a leaking valve.
What to Expect After
Once you’ve reset and completed the learn drive, the warning goes out and stays off until a tyre genuinely loses pressure again. Because the 4C has no live per-wheel reading, treat any fresh warning as a real prompt to get a gauge on all four corners rather than a false alarm. There’s nothing further to do after the learn drive — the system keeps comparing the wheels against your stored baseline whenever you drive.
Frequently Asked Questions
How do I reset the tyre pressure light on an Alfa Romeo 4C?
Set the pressures, confirm/reset in the menu, then drive about 20 minutes above 25 km/h to store them. Do the set with the tyres cold and remember the staggered fitment — fronts and rears take different pressures. The car needs that steady drive to learn the new baseline, so a couple of minutes around the block usually isn’t enough.
Does the 4C have pressure sensors in the wheels?
No — it uses an indirect, wheel-speed-based system, so there’s no in-wheel sensor battery to fail. That also means no sensors to register after a tyre change and nothing to damage when the tyre is fitted. The trade-off is that it can’t display an individual pressure for each corner, so you still need a gauge to set them.
Why won’t the warning clear?
Usually a tyre still below spec, or the learn drive wasn’t long enough.
Why does the light come on in cold weather?
Air contracts as it cools, so pressures that were correct on a warm day read low on a cold morning and the system flags the change. Top the tyres back up to the placard figure while they’re cold, reset the setting, then complete the learn drive. If it keeps returning on the same corner, have that tyre checked for a slow leak.
Do I need a tool?
No — setting the pressures and driving is all that’s needed. Because the 4C’s system is indirect, there are no sensors to register and no workshop tool involved in an everyday reset. The only kit you need is an accurate tyre-pressure gauge and somewhere to inflate the tyres to the correct cold figures before the learn drive.
If the warning came on with other lights, decode the code on autodtcs.com.
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