Locks, Latches & Sunroof

Very likely. Modern door latches contain the lock actuator, so when a single door stops responding while the rest of the car behaves, the motor inside that latch has failed rather than anything central. Listen closely as you press the remote: a faint buzz or a rapid clicking from that door means the motor is turning without moving the mechanism, which is the classic failure. Order the latch for that exact position and side, matching the connector pin count as well as the OE number, and the fault goes with it.

Inside the latch. It carries a small switch that reports whether the claw has closed on the striker, and when that switch corrodes or its contacts wear, the car believes a door is open. The knock on effects are worse than the message: interior lamps stay lit, the alarm refuses to set, and the twelve volt battery flattens overnight. Find which door by opening and closing each in turn while watching the display, then replace that latch. Clearing the door drains helps, since water reaching the latch is the usual cause.

Check the striker first, because it is cheaper and it moves. Look at the wear marks on it: if they sit high or low rather than centred, the door has dropped or the striker has shifted, and adjusting or replacing it cures the problem. If the striker looks square and the door still needs force, the latch claw or its spring has worn and the latch is the part to order. Do not simply move the striker inward to compensate. That stresses the aperture seal and pulls the door out of line.

It is a hook that engages after the primary claw releases, so a bonnet that is unlatched at speed lifts a few centimetres and stops rather than folding back over the windscreen. You use it every time you open the bonnet, reaching under the leading edge to release it. Because it lives in the airstream it corrodes, and a stiff or seized secondary catch is the usual reason a bonnet refuses to open after the cable is pulled. The complete bonnet latch is listed here as one part.

Vehicle lock cylinder and key sets are supplied as matched assemblies, which is why they are catalogued together. Fitting a new barrel means your door key differs from any keys the car already has unless the set is coded to the vehicle, so read the listing carefully before ordering. On cars with keyless entry, the barrel is a mechanical backup only and does not affect the transponder or the remote. Where you need a barrel matched to existing keys, send the details through the quote form before ordering.

Start with the guides and the drains rather than the motor. Sunroof mechanisms run on plastic guide shoes in a greased track, and when the grease dries or a shoe cracks, the panel binds, the motor stalls, and the control unit stops mid travel. Clean and regrease the track first. If the panel moves freely by hand but the motor still struggles, the sunroof motor assembly listed here is the part. A rattle at speed usually means a guide or the reinforcement panel connecting plate rather than the glass.

Almost certainly blocked drains, not a failed seal. A sunroof is designed to let water past its seal and into a tray, from which four tubes run down the A and C pillars and out under the car. Pollen, leaf debris and pine needles block those tubes, the tray overflows, and water appears at the headlining or in the footwell. Clear them with low pressure air or a soft trimmer line before spending anything. If the glass itself has lifted or its seal has torn, the sunroof glass assembly is listed here.

Strikers, cables, dampers and small brackets sit at the bottom of the range in this category. Door and tailgate latches cost more because each contains a motor, switches and a certified mechanism. Sunroof motors and glass assemblies sit at the top, since they are large, specific and low volume. The live minimum and maximum are shown in the band at the top of this page. Diagnosing precisely before ordering matters here, because a striker and a latch differ by an order of magnitude in price.

It is a realistic job for a careful home mechanic. Remove the trim card and the vapour barrier, disconnect the interior handle and lock rods or cables, unplug the connector, and undo the three bolts on the door shut face. The awkward part is manoeuvring the latch out through the access hole and reconnecting the cables blind. Budget two hours for a first attempt, and take a photograph of the cable routing before anything comes off. Test the door open and shut before refitting the vapour barrier.

On cars with an electric release, the fuel filler flap actuator is a small solenoid behind the flap, and it fails either mechanically or from water ingress. Test the manual override first, usually a cable or a pull tab inside the boot side trim, which confirms the flap and the hinge are free and points the finger at the actuator. Charging flap parts sit in their own category. If the flap is physically jammed rather than electrically dead, look at the hinge and the latch before ordering.

Mechanically it may bolt in and electrically it will disappoint you. Latches differ in connector pin count and function between specifications: some carry double locking, some have a soft close cinching motor, some report door position on a different circuit. Fitting the wrong one produces a door that locks but reports its state incorrectly, or one that refuses to cinch. Match the OE number from your own latch. Where the number returns nothing, send it through the quote form so the factory catalogue is checked properly.

Yes. Latches and lock actuators are handed and vary with central locking specification, and sunroof components are ordered rarely, so both groups produce listings that wait for a quote. Send the number and say which opening it belongs to, since a front door latch, a rear door latch and a tailgate latch are three different parts. If the sunroof stops part way rather than failing outright, have the guides and the drain tubes checked before ordering a motor. Blocked drains and a dry mechanism cause most of the complaints that arrive described as a failed motor.