Central locking motor contact springs
Posted: 15 Oct 2025, 12:02
I know that very, very few people would ever try and refurbish a central locking motor assembly now, because you can buy cheap Chinese version of the later T4 motor from Ebay for like a tenner and Brickwerks sells the plug and wire and contacts to enable you to make up the wiring to use the T4 motor.
But if you find yourself with an original motor (or indeed the early T4 version) apart and find that the two 3mm diameter springs on the contactor plate are now just a rusty residue then I have in stock stainless steel wire springs of the right size and length to replace them and will happily sell you the two you need for little more than the postage.
One of my motors is water damaged beyond repair, but one of them is salvageable, but this time (last time I rebuilt one was 15 years ago) I couldn't find a suitable bit of spring to do the job, all the biro springs (15 years ago I cut a length off a biro spring) I could lay my hands on were too wide so I went down the Ebay rabbit hole and found a supplier in China who seemed to have the size required, and they have just arrived and are perfect, but I had to order 10, hence the 'in stock' going forward
The T4 wiki has really good info on the central locking system and repairing the motors and modifying them in case anyone finds themselves in this situation and would rather repair than modify the wiring or fit cheap parts
But if you find yourself with an original motor (or indeed the early T4 version) apart and find that the two 3mm diameter springs on the contactor plate are now just a rusty residue then I have in stock stainless steel wire springs of the right size and length to replace them and will happily sell you the two you need for little more than the postage.
One of my motors is water damaged beyond repair, but one of them is salvageable, but this time (last time I rebuilt one was 15 years ago) I couldn't find a suitable bit of spring to do the job, all the biro springs (15 years ago I cut a length off a biro spring) I could lay my hands on were too wide so I went down the Ebay rabbit hole and found a supplier in China who seemed to have the size required, and they have just arrived and are perfect, but I had to order 10, hence the 'in stock' going forward
The T4 wiki has really good info on the central locking system and repairing the motors and modifying them in case anyone finds themselves in this situation and would rather repair than modify the wiring or fit cheap parts