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2015 Ford Fiesta - Low beams intermittent

Messages
1
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0
City
Lavon
State
TX
Country
United States
What I Drive
2015 Ford Fiesta
#1
My wife's 2015 Fiesta has a light issue. whenever you start the car, both low beams work will work for a few minutes before both low beams start to turn off at random times. Right when the issue is about to start, a small repetitive click can be heard coming from the engine bay. It goes away, then both lights remain on. light clicking begins, both low beams will randomly shut turn off then reappear once again. What's the issue?
 

Handy Andy

Senior Member
Premium Account
Messages
405
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380
City
Grand Rapids
State
MI
Country
United States
What I Drive
2018 Ford Fiesta SE HB
#2
Hmm...The lights themselves - are always supplied power thru the main power relay when the engine is started. The lights go out when the engine is shut off or the light switch control knob is turned to OFF - you have the final say, but when you turn off the ignition - unless AUTO (A) is set on the control - the lights also go out.

If you encounter a flickering then they stay on, does this occur as you drive? I'm trying to help in thinking if vibration of driving is causing this - then the under the hood Engine Fuse block might need to be investigated. There are also grounding points for the harness and the lamps - but the LAMP switch HAS the Ground wire or main return - so if the lights flicker - two places to check - press down all the relays and fuses in the engine compartments fuse block and also locate the light switch inside and see if it's knob is loose. As you operate the switch (do this when the engine is running so you can try to recreate this) try tapping or flexing/Torqueing on the knob thru the turning range and see if the condition can be repeated or even occur.

It is my thoughts that either the wiring harness in the engine compartment needs some service or the light switch is nearing the end of it's service life or it somehow got kicked or "took a knee" when someone got in the car - loosening the knob from the index shaft and now it makes an intermittent connection until the tiny spark of current can spot weld the contact on until it's shaken loose by rotating the knob back to off.

Setting it to Auto won't help because if the shaft is damaged, the switch will just be as intermittent on Auto as if it were on any other setting except off.

So you can always force the Auto function on by jumpering the wiring harness and deal with the car wanting to run lights in Auto all the time - but if you're doing this to save the electrical and battery - you'll need to verify it's not the switch or the fusebox causing this.
 

scotman

Well-Liked Member
Premium Account
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City
Grass Lake
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MI
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#3
Sounds like a relay is failing. Or possibly some wire in that circuit is exposed and shorting!
Has the car ever been in a front collision?
 


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