Skip the auto shop - Our mechanics make house calls

Q: Turn signal causing high beams to come on

asked by on

When I use the turn signal, the high beams come on.

A: The symptoms described lead me to believe t...

The symptoms described lead me to believe that your Cadillac may be experiencing a failing combination switch. The Cadillac’s turn signal switch controls a variety of lights, as well as your cruise control, and receives more use than any other switch on your Cadillac. This may be why you are experiencing your high beams illuminate when you use your turn signal. To be 100% certain however, it may be time to enlist the assistance of a certified mechanic to come by and inspect your CTS with you. They will have the experience and tools needed to identify the cause of your Cadillac’s symptoms and make the necessary repairs, such as replacing the combination switch, so your brights only come on when you actually need them.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: turn signals are working then their not and the driver side window goes down and only half way back up

It sounds like you have an electrical issue caused by a bad connection possibly at the body control module or lighting control module. The window concern could be a microswitch that normally only engages when the window is all the...

Q: Car won't stay running

Sounds like you might be having an alternator problem. The vehicle uses the battery to start, once it is running the alternator takes over providing the vehicle with all the electricity it needs. If the alternator fails, the car continues...

Q: Service stabilitrak and three traction lights are on

There is a possibility that the lights may be related to the code, but the system will have to be scanned and the trouble codes pulled to be sure. You may have a couple different things going on with the...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...