Brake Light Switch for BYD Xia & Song Pro DM-i, OE 12451853-00

This switch fits a broad range of BYD variants, which is useful, but it also means the name of your model on its own is not proof of fit. Work from the fitment table on this page and find the exact row for your build. Then check OE number 12451853-00 against the switch currently in the car. Small switches sometimes change part way through a production run. If your build is not shown, or you cannot get to the old switch to read it, send the vehicle details through the quote route.

Not necessarily wrong. This listing also carries the reference VBH-4134200C, which is the same switch under a second marking, so either that or 12451853-00 on the old part points here. Numbers are usually moulded into the plastic body and can be hard to read once the switch has been in service. Clean the face and try again in good light. If what you find matches neither reference, send us the characters you can make out together with your vehicle details and we will check them against this listing.

This switch is safety critical, so our answer is yes. It sits in the brake lamp circuit, which is a system other road users depend on rather than one you can judge from the driver's seat. Ask them to check that the lamps behave as expected before the car leaves the ramp, and keep the old switch until they have.

The delivery time is 8 to 25 days, from order to door. If the car is off the road while you wait, tell us that when you enquire and we will confirm the current position before you commit. Use the quote route on this page if you would like that checked before you order. The shipping cost for your country is shown on this page and confirmed at checkout before you pay.

This switch is made of plastic, so the moulded reference will be on the body itself and can be compared directly with the part coming out of the car. Handle it by the edges and keep the terminals clean while you do that. It is supplied new rather than reconditioned. Leave it in its packaging until the technician is ready to fit it.

The mounting position for this switch is interior, so it sits inside the cabin rather than under the bonnet or beneath the floor. It is not split by side, so there is no left or right version to choose between. Anyone quoting for the job will want to know where the part sits before they price the labour, so it is worth passing that on. Confirm your build in the fitment table on this page, then have OE number 12451853-00 checked against the switch already in the car.

Only one version of this switch is listed. Nothing has been sourced at the Aftermarket tier against reference 12451853-00, so the Original/Genuine BYD part is what appears on this page and there is no second option to weigh up. When two tiers exist for a part, we show them together and let you pick. If you would rather we looked for another supply route for this switch, use the quote form on this page and include your vehicle details along with the number you read off the old part.