Dash Lights go dim

Got a 2014 only 3060 miles on her got two problems that seem to happen 1. Dash lights will be dim when driving then just go bright all of a sudden also the screen in the center console does it at the same time then go dim again. 2 At cold start up in either winter or summer when turning on the heater or air conditioner there is a big clunk sound under the hood but after driving to work shutting off truck then re starting and turning on the heater of air NO clunk. any ideas not even time for first service yet but may be heading in sooner .

For the dimming issue, maybe under/over-voltage from the alternator. Clunk sounds like you have a HVAC valve sticking, maybe have the Freon level check, if low, it can produce something similar.

For the dimming, you may have a bad light sensor. You can check that out by going to the center screen, settings, display. Then turn off the auto dim. Run like that for a while and see if it still dims on ya. If it doesn't, then switch back to auto dim and see if it does it again. Mine will go dim or bright depending on how light or dark it is outside. Even on a heavy cloudy day it will dim thinking its night.

As for the clunk, it might just be your AC compressor switching on. If you have your CC in auto, the AC will come on with the heater if it detects too much moisture in the air (to prevent window fogging).

Towerhog said:

For the dimming, you may have a bad light sensor. You can check that out by going to the center screen, settings, display. Then turn off the auto dim. Run like that for a while and see if it still dims on ya.

As for the clunk, it might just be your AC compressor switching on.

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It does it when the heater kick on also.

BassRap said:

It does it when the heater kick on also.

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Compressor will kick on if you leave it in auto. Works when the defroster comes on.

Thanks guys.

Sounds like it's time for a trip to the dealership!

BassRap said:

Got a 2014 only 3060 miles on her got two problems that seem to happen 1. Dash lights will be dim when driving then just go bright all of a sudden also the screen in the center console does it at the same time then go dim again. 2 At cold start up in either winter or summer when turning on the heater or air conditioner there is a big clunk sound under the hood but after driving to work shutting off truck then re starting and turning on the heater of air NO clunk. any ideas not even time for first service yet but may be heading in sooner .

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Let me know when you head in to the dealership, BassRap; I'll alert your regional customer service manager so they can ensure things go smoothly. Once you've made an appointment, PM me your full name, best daytime phone number, VIN, current mileage, and servicing dealership. I'll do the rest.

Crystal

FordService said:

Let me know when you head in to the dealership, BassRap; I'll alert your regional customer service manager so they can ensure things go smoothly. Once you've made an appointment, PM me your full name, best daytime phone number, VIN, current mileage, and servicing dealership. I'll do the rest.

Crystal

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Thank you, I love the truck first Ford I have owned had 11 GMC and one Ram in the last 13 years buy a new one almost every year but wanted to hold on to this one if no issues.

Are you sure the clunk is under the hood and not in the dash? If it's in the dash, it is probably the blend door actuator.