Tyre warning—or the wrong wheel shown?

TPMS is a warning aid, not a replacement for tyre checks. MG manuals say the system monitors pressure using sensors in the tyre valves, but it does not reinflate the tyre or replace routine inspection.

1. Inspect before clearing anything

1. Park securely away from traffic and check all four tyres from a safe position.
2. Look for obvious deflation, cuts, bulges, objects, damaged valves or wheel damage.
3. If a tyre is visibly low or damaged, do not drive on it. Use the handbook’s tyre-repair/recovery route or call breakdown assistance.
4. Photograph the warning and displayed pressures before switching screens or changing settings.

2. Check the correct cold pressure

Use the pressure label on your vehicle—commonly on a door pillar—and the handbook for the exact model, wheel/tyre size and load. Do not copy a number from another MG, an online post or the tyre sidewall’s maximum marking.

1. Check with a reliable gauge when tyres are cold, before a significant drive.
2. Check every tyre, not only the position highlighted on screen.
3. Adjust to the vehicle manufacturer’s figure for the load being carried.
4. Recheck a tyre that needed significant air; recurring loss needs professional inspection.

The Highway Code requires tyres to be correctly inflated to the manufacturer’s specification for the load and free from prohibited cuts and defects. UK cars require at least 1.6mm tread across the central three-quarters around the full circumference.

3. Separate low pressure from a system fault

• Steady pressure warning: may indicate pressure loss; inspect and measure promptly.
• Warning flashes, then remains on: UK MOT guidance says this can indicate a monitoring-system malfunction rather than simple low pressure.
• Explicit “TPMS Fault” message: treat it as a system fault and arrange MG-authorised diagnosis.
• One implausible value or no reading: may indicate a sensor, communication or identification issue, but physical pressure must still be checked.

Warning wording varies. Record it exactly rather than translating every symbol into “puncture”.

4. If the screen highlights the wrong wheel

A wheel-position display can become inconsistent after wheels are rotated, swapped or replaced. Check all four physical pressures and note which tyre actually differs. Do not deflate or overinflate a safe tyre merely to make the screen position appear correct.

MG owner-manual material for some models says TPMS self-learning is required after sensor/receiver replacement or tyre rotation and directs owners to an MG authorised repairer. That is model-specific evidence—not proof that every MG uses the same relearn sequence.

5. Ask what changed after tyre or wheel work

• Were front and rear wheels rotated?
• Was a tyre, valve, sensor, wheel or receiver replaced?
• Were seasonal or spare wheels fitted?
• Did the warning begin immediately, after driving, or days later?
• Did the workshop confirm sensor compatibility and complete the model-specific relearn?

Give this timeline to the tyre workshop or MG repairer. It is far more useful than repeatedly clearing the warning.

6. Do not guess a reset sequence

Some vehicles relearn after correct inflation and driving; others require a menu action or workshop equipment. Follow only the handbook for the exact model, year and software. A generic internet “reset” may hide the warning temporarily without correcting pressure, damage or sensor identification.

Do not disconnect the 12-volt battery, remove trim, alter valve hardware or use unverified diagnostic tools to clear a TPMS warning. If the message persists after pressures are confirmed, use an MG authorised repairer or qualified tyre professional.

7. Record a clean fault pattern

• model, trim, registration year and wheel/tyre size;
• exact warning wording and whether the lamp flashed or stayed steady;
• cold gauge reading for all four tyres and the displayed values;
• which screen position was highlighted;
• recent tyre, valve, sensor or wheel work;
• temperature, time parked and distance driven before the warning;
• whether the same physical tyre loses pressure again.

Do not publish registration numbers, VINs or location data. A redacted pattern report can be sent through the MyMGEV contact form.

Sources and scope

Reviewed 8 September 2026. Exact thresholds, display names and relearn methods vary. This guide deliberately avoids one universal reset instruction.

• MG Europe: MG4 owner manual—TPMS and tyre repair sections
• MG Europe: owner-manual TPMS operation and self-learning example
• The Highway Code: tyre condition, inflation and tread
• DVSA MOT inspection manual: tyres and TPMS
• GOV.UK: check your vehicle is safe to drive
• MyMGEV: how we check information