Skip the auto shop - Our mechanics make house calls

Q: When replacing the brake switch, why would the 3rd brake light work and not all 3?

asked by on

When replacing the brake switch, why would only the third brake light work and not the other two

A: It is possible that both of the brake light...

It is possible that both of the brake light bulbs are out. It is also possible that the other two brake lights are on a separate fuse from the third brake light which could cause the third brake light to work separately from the other two. I would recommend having a certified technician take a look at a wiring diagram to see the brake light circuit layout. This will help the technician to determine the cause of the brake light issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Drivers side rear view mirror defogger not working and how do I repair?

Hello, thank you for writing in. The defroster within the mirror is rather simple. It uses a resistor to collect electrons which ends up resulting in heat. it is this heat that is used to defrost/defog the mirror. If the...

Q: Taillights not turning on

Hello, on most cars the headlights and taillights are in the same circuit, but not the brake lights. The head and tail lights are actually controlled by your headlight switch. The brake lights are always live unlike head and tail...

Q: oil drain plug

You would use a bolt-out spiral fluted socket. A common example of this tool is the Craftsman 10 pc. Damaged Bolt/Nut Remover Set Low Profile Bolt-Out (Item # 00952166000P Model # 52166). However, Irwin makes a set as well and...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...