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Symptom

Seat belt reminder will not stop

The belt lamp stays lit, or the chime continues, with the belt properly fastened — or the car insists on a belt for a seat with nobody in it. The vehicle decides this from two things it can measure: a switch in the buckle, and on the passenger side a pressure-sensitive mat that estimates whether the seat is occupied. A bag of shopping on the passenger seat is the commonest innocent explanation, and worth clearing before anything else. A buckle switch that has been contaminated with a drink is the commonest real one.

Also described as: seatbelt light stays on, seat belt light on, belt reminder wont stop, seatbelt chime, belt light with nobody there, هشدار کمربند قطع نمیشود, صدای کمربند ایمنی, چراغ کمربند روشن میماند, pitido cinturon no para, aviso cinturon constante, luz cinturon no se apaga, suena cinturon siempre, تنبيه الحزام لا يتوقف, صفارة حزام الأمان مستمرة, لمبة الحزام لا تطفي

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What this usually means

The car decides this from two things it can measure, and knowing which two removes most of the mystery: a switch in the buckle, and on the passenger side a pressure-sensitive mat that estimates whether the seat is occupied.

So the commonest innocent explanation is a bag of shopping on the passenger seat, and it is worth clearing before anything else — along with a laptop bag, a toolbox, or a heavy coat. Anything the mat reads as a person produces a belt reminder for a seat nobody is sitting in.

The commonest real fault is a contaminated buckle switch. A drink spilled into the buckle leaves a residue that bridges or blocks the contacts, so the car cannot tell whether the tongue is latched. It presents as a reminder that continues with the belt properly fastened, which is the more irritating direction because the driver is doing everything right.

Two things worth knowing before parts are ordered. The buckle switch is frequently part of the buckle assembly rather than a separate item, so the repair is a belt component and is safety-related — it should not be improvised. And on the passenger side the reminder shares its sensing with the airbag classification system, so a reminder fault and a passenger airbag indicator fault often have one cause. If both are misbehaving, diagnose the sensing mat rather than the reminder.

Working through it

  • Reminder for an empty passenger seat

    Likely cause
    Something on the seat the mat reads as a person — shopping, a bag, a heavy coat
    How to confirm it
    Clear the seat completely and watch. Free, immediate, and it resolves most of these.
    What fixes it
    No repair. If it persists with the seat genuinely empty, move to the sensing mat.

  • Reminder continues with the belt correctly fastened

    Likely cause
    The buckle switch — most often contaminated by a spilled drink
    How to confirm it
    Read the buckle switch's live state while latching and unlatching. Inspect the buckle for residue.
    What fixes it
    Renew the buckle assembly. This is a restraint component and should not be improvised or bypassed.

  • Reminder and passenger airbag indicator both misbehaving

    Likely cause
    The shared sensing mat rather than two separate faults
    How to confirm it
    Read the occupant classification module's codes. Two symptoms with one sensor is the likelier explanation.
    What fixes it
    Renew the sensing mat and re-zero the system. Diagnosing the reminder alone would miss the airbag consequence.

  • Started after a seat was removed or the interior worked on

    Likely cause
    A connector under the seat not remade, or the occupant system not re-zeroed
    How to confirm it
    Retrace the work; ask specifically whether the seat came out.
    What fixes it
    Remake the connection and run the re-zero procedure.

  • Chime with a child seat fitted in the passenger seat

    Likely cause
    Belt tension loading the mat beyond the child's weight — the system reads an unbelted occupant
    How to confirm it
    Remove the child seat and re-test. Say it is normally fitted when reporting the fault.
    What fixes it
    Follow the manufacturer's guidance for that seating position, and re-zero after removal where required.

  • Reminder for a rear seat

    Likely cause
    A rear buckle switch, or a folded seat back not latched — many systems monitor rear belts and seat back position
    How to confirm it
    Check each rear buckle's live state, and that the seat backs are fully latched upright.
    What fixes it
    Latch the seat back, or renew the buckle. Do not disable the reminder to silence it.

Codes that produce this symptom (5)

Listed with the codes that most typically present this way first — the likeliest place to start.

Information, not instruction

CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.

Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.

Others with this symptom

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  • The car — make, model, year and engine. The same fault behaves differently on each.
  • What you measured, not only what you replaced.
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