Reset the TPMS

Last updated: May 18, 2026

The third-generation Ford Focus (Mk3, DYB chassis, 2011–2017) was fitted with a Tyre Pressure Monitoring System on every UK/EU trim. The Mk3 typically uses an indirect TPMS — pressure is inferred from ABS wheel-speed asymmetry rather than measured by valve-stem sensors — though some 2015–2017 facelift cars at higher trim shipped with direct TPMS valve-stem transmitters. After re-inflating tyres, replacing wheels, or after a battery disconnect, the system must be reset so it knows the new pressures are the correct baseline.

Before you start

Identify your TPMS variant first:

• Indirect TPMS: the cluster’s information display shows only a single warning lamp (exclamation mark inside a horseshoe). No per-wheel pressure values are displayed. This is the more common configuration on the Mk3.
• Direct TPMS: the cluster (on facelift Titanium and ST trims) shows per-wheel pressure values via the wheel-icon page in the message centre.

The reset method differs slightly between the two.

• Check pressures cold. Car stationary 3+ hours, or driven less than 1 km.
• Driver’s door-jamb placard. Typical Mk3 pressures: 2.2 bar / 32 psi all round on standard tyre sizes (215/55 R16, 215/50 R17, 235/40 R18 on ST). Full-load values listed in a second row below.
• Accurate gauge required. A £15 dial gauge is more reliable than most forecourt machines.

Tools required

• Accurate tyre pressure gauge
• Compressor or foot pump

Reset procedure — indirect TPMS (pre-facelift + most facelift)

1. Inflate all four tyres cold to the placard pressures, verified with your own gauge.
2. Switch the ignition ON (engine off, key to position II or one press of START without brake pedal).
3. Use the steering-wheel arrow buttons (the four-way pad on the left of the wheel) to scroll the information display until “Settings” or “Vehicle Info” appears.
4. Navigate to “Tire Pressure” (or “Tyre Pressure” — depending on regional firmware).
5. Press and hold the OK button until “Tire Pressure Set” or “Tyre Pressure Reset” appears. This typically takes 2–3 seconds of held button.
6. Start the engine and drive normally for at least 20 minutes at varying speeds above 25 km/h. The TPMS algorithm needs a baseline drive to confirm the new pressures.
7. The TPMS warning light extinguishes automatically once the system has sampled enough wheel-speed data.

Reset procedure — direct TPMS (facelift Titanium and ST)

Direct TPMS systems self-learn during normal driving once pressures are correct. There’s no menu-driven reset, but you can verify by checking the per-wheel display.

1. Inflate all four tyres cold to the placard pressures.
2. Start the engine and drive for 10–15 minutes at varying speeds above 25 km/h.
3. Navigate the cluster’s TPMS page via the steering-wheel arrow buttons to see the per-wheel readings update to the new pressures.
4. The warning light extinguishes once each sensor has reported within the acceptable range for several minutes of continuous driving.

How to verify it has worked

• The TPMS warning light is no longer illuminated.
• “Tire pressures normal” or no message at all when scrolled to the TPMS page.
• On direct TPMS cars: per-wheel readings match what you set (within ±0.1 bar tolerance).
• A 24-hour test: leave the car overnight, drive the next morning. If the light returns, one tyre has a slow puncture.

Troubleshooting

Indirect TPMS: light stays on after 20 minutes of driving above 25 km/h. Most common cause: one tyre is still under-inflated. Re-check all four cold; even a small (3–5 psi) deviation can keep the warning active. Second most common: the SYNC menu’s “OK hold” wasn’t long enough — try 5 seconds of held button instead of 2.

Direct TPMS: one specific wheel shows “—” or doesn’t update. The valve-stem sensor on that wheel has failed (typically the internal battery — Mk3 direct TPMS sensors are rated for 7–10 years; many original sensors are now reaching end-of-life). Replacement requires a tyre dismount and rebalance, around £40–60 per sensor.

“Check TPMS System” text message persists. The TPMS module has logged a stored fault, not a low-pressure reading. Read the BCM with FORScan (free version supports Mk3 Focus). Most common stored fault on the Mk3 is “implausible signal from one or more wheel-speed sensors” — a rear ABS sensor going faulty triggers this exact code.

Light returned 24 hours after the reset. Slow puncture. Recheck pressures cold and look for the offending tyre. Common locations: nail in the tread, slow valve-core leak, or bead leak (a film of soapy water around each tyre’s bead will bubble at the leak).

I changed to winter wheels with a different tyre size. TPMS won’t reset. Indirect TPMS bases its baseline on rolling circumference, so a different tyre size invalidates the calibration. Reset cold with the new pressures and drive 30 minutes; some Mk3 facelift firmware also requires entering the new tyre size in the Settings menu.

Frequently asked questions

How do I tell if my Mk3 has direct or indirect TPMS?
Switch the ignition on and navigate the cluster’s information display. If you can see four numbers (one per wheel) like “FL 2.3 / FR 2.2 / RL 2.2 / RR 2.3”, you have direct. If you see only a single warning state with no per-wheel data, you have indirect.

How long do TPMS sensors last on the Mk3?
Direct sensors: 7–10 years internal battery life. Indirect TPMS has no battery (uses ABS sensors) and lasts the life of the wheel bearings.

Does cold weather cause false warnings?
Yes. Pressure drops about 0.1 bar per 10 °C cool-down. The first cold morning of autumn often triggers the warning. Top up cold and run the reset.

Should I reset after rotating tyres front-to-back?
Indirect TPMS: yes. The baseline is based on relative rotational speed. Direct TPMS: no, but the system will auto-relearn positions within a few minutes of driving.

Will the procedure work on the Focus ST and RS?
Yes. ST and RS Mk3 use the same cluster firmware and the same reset procedure. The RS has direct TPMS standard (track use requires per-wheel readings); ST varies by year of registration.

For TPMS-related diagnostic trouble codes that won’t clear with a drive cycle, see autodtcs.com.