The brake lights on my Citroën C3 have stopped working, but the rest of the lights are fine. Where is the fuse that protects them and what is the correct amperage?

A malfunctioning brake light is a safety hazard. Although the most common cause is… brake pedal switch (sensor) If the circuit is faulty, a blown fuse could also be the culprit.

• Focused Model: Citroën C3 (First and Second Generation).
• Location of Protection: The brake light control circuit is protected by a fuse that is usually located in the Engine Service Module (BSM), under the hood, or in some newer models in the BSI, but the BSM is the most common location for the power circuit.
• Correct Fuse: The fuse that protects the brake light circuit is typically the F15, with amperage of 10A.

Diagnosis and Solution: If the fuse F15 (10A) If the fuse is blown, replace it. If the fuse is good, the problem is almost always the… brake pedal switchThis is a plastic part that is subject to wear and tear and needs to be replaced. The replacement is important because the brake switch also sends a signal to the ECU and, in the case of the AL4, to the automatic transmission.