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.

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
  1. Home
  2. Questions
  3. Turn signal causing high beams to come on

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: Power window, signal light and wiper malfunction after rain water got inside my car.

Hi there. Usually when electrical components inside the vehicle become wet, it will only take one exposed wire to short out a relay or fuse panel. There are several electrical components that operate all of these systems that may have...

Q: Car runs rough sometime an engine diagnosis says I have a misfire in three of my six cylinders sometimes car runs smooth other tim

Hello, thank you for writing in. When it comes to a misfire on several cylinders, the vehicle is likely struggling with compression. If the issue was fuel or spark related, the engine would have a misfire code on all cylinders....

Q: Rear bank of cylinders has no spark.

Hello. A no spark condition can be caused by a wide variety of issues. If the issues appear to be affecting an entire bank, that is an entire side of the engine, then it may be possible that there is...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
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...