When I turn my headlights on the motor loses power and the cruise control stops working?

JANICELOWE

MEMBER
2011 KIA SPORTAGE
2.4L
AUTOMATIC
101,000 MILES

If I let off the gas and then give it gas again it runs fine, but the cruise control will not start back unless I turn the headlights off.

Thursday, May 18th, 2023 AT 5:14 PM

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

It sounds like the alternator is weak on recharging the system but to be sure here is a guide to help and I have included how to change the alternator out in the images below.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Check out the images (below). Please let us know if you need anything else to get the problem fixed.

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Friday, May 19th, 2023 AT 11:37 AM

JANICELOWE

MEMBER
2 POSTS

Thank you for your reply. The alternator has already been checked and it is good.

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Friday, May 19th, 2023 AT 11:49 AM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

With the engine running and the headlights on, let's check the voltage at the battery. Here is a guide that will help, the voltage should be about 13.5 volts:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please go over this guide and get back to us.

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Saturday, May 20th, 2023 AT 2:25 PM