Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Reasons why the tail lights work but the brake lights do not

Model: (Various brands) Various
Part: Tail light

There are several reasons why the rear lights work and the brake lights do not, or vice versa. In older cars, the brake lights and the rear lights use the same bulb that houses two separate circuits, so it is a good idea to check them with a normal multimeter, which can be purchased online for a few euros. Another reason may be a blown fuse, and the one related to the brake light can be easily identified through the owner's manual. A third reason could be a faulty brake switch: this is located near the pedal, and it can be tested with the same multimeter we have already mentioned. Another reason could be faulty plugs or connectors, or corrosion of the connector pins themselves. This requires checking the connectors and cleaning them with a specific liquid such as WD-40; we may also need to check the connection of the bulbs, and that the bulb holders are worn out. Finally, we will need to check the wiring that connects the bulbs to the electrical connectors, and if there is a broken wire it can be very difficult to locate.

Posted on 22 December 2024 by ScegliAuto

Video tutorial

Related tutorials

Reasons why the tire monitoring system may not work
Reasons why the tire monitoring system may not work
(Various brands) Various In reality, when the tire pressure monitoring system is not working, the reasons can be different: the sensors' battery is low, a problem with the TP…
Reasons Why a Car Won't Start
Reasons Why a Car Won't Start
(Various brands) Various Why won't a car start? The first reason could be the battery; if you insert the key and the car is dead, then the battery is gone. If the starter is …
The most common problem for which the brake lights do not turn off
The most common problem for which the brake lights do not turn off
(Various brands) Various Sometimes it can happen that, even though our car does not have the brakes pulled, or is even turned off, the brake lights remain on. There is a rath…

Other guides you may be interested in

How to Open the Bonnet on the Lancia Y

To open the bonnet on this vehicle, follow these simple instructions: first, open the driver's door and locate the lever positioned just below the dashboard, marked with an image of the vehicle with the bonnet open. Pull this lever towards you until you hear a "click" indicating the bonnet is released. Next, exit the cabin and stand in front of the bonnet to disengage the safety catch and complete the opening. To do this, slightly lift the bonnet, locate the yellow lever underneath, and pull it to the left to fully release and open the bonnet.

Watch the video!


by ScegliAuto

More videos