Exterior Lighting Related Problems of the 2020 Ford F-350

Table 1 shows one common exterior lighting related problems of the 2020 Ford F-350.

Table 1. Exterior Lighting related problems of Ford F-350

Problem Category Number of Problems
Exterior Lighting problems
4

Exterior Lighting problem #1

Vehicle produced symptoms over time: loss of Ford pass connectivity, inconsistent turn signal function, occasional dashboard alarm for open driver door while driving, unwarranted security alarm triggers when still at home. Second to last incident was an unwarranted security alarm that triggered, and was unable to be stopped by use of the security controls (lock/unlock, alarm key button). Horn "wore out" as if fuse burned. Disconnected battery to stop. Two days later, after reconnecting the battery I drove the vehicle, horn was not functional, and I was unable to stop the engine. Once started, the vehicle did not turn off, even with key completely removed from ignition switch. This was repeatable, every ignition cycle, thereafter. I drove to the dealer, that morning. The dealer mechanic was required to shut off the engine. Dealer mechanic diagnosed failed battery junction box. After repair, mechanic diagnosed faulty body control module. Dealer mechanic also recommended replacement of full "main" wiring harness, interconnecting the two. The cause for all failures was corrosion and electrical shorts due to water ingress. I am aware Ford has issued numerous tsbs and recalls for faulty bcms, in the same age range as this vehicle. Also, tsbs for water intrusion into the bcm. The mechanic took photos of corrosion on both the bcm and main wiring harness. My prior vehicle was a 2011 Ford f-150, with the same 6. 2l engine. No such faults were experienced up to Nov. 2023 sale. Photos of the corrosion on main wiring harness and bcm attached. Dealer has possession of the vehicle. Repairs in progress. Ford has declined support for faulty components; recalls not associated with this vehicle. Estimated repairs to date on 6 year old vehicle on critical electronics in excess of $7,000.

Exterior Lighting problem #2

In 2020 I purchased meyer products night saber 4 led headlights for my snowplow. I thought they would be better than meyers nite blaster 2 halogen headlights. Which I have found not to be the case. The lens defroster does not work well in heavy snow. They do not stay on constantly to keep melting snow off of the lens. Which becomes heavly snow laden severely impacting driving visibility. On more than one occasion I have had to pull over and manually clean the snow build up off of the lens. The most recent was the evening of Thursday [xxx] in which maine had a heavy wet snow fall in penobscot & waldo county area. I had called meyer products in the past to complain about the the heater grid issue of not being able to keep up with keeping the lens clear & free of snow build up. I have included a picture of the plow headlight. So you can view the heater grid. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Exterior Lighting problem #3

The contact owns a 2020 Ford F-350. The contact stated that her son became aware that the white bulbs in the third brake light had two burned holes and cracks inside. The vehicle had not yet been taken to an independent mechanic or local dealer to be diagnosed or repaired. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA hotline. The approximate failure mileage was 57,000.

Exterior Lighting problem #4

Right side headlight always had condensation and much more condensation than the left side, however, Ford and dealer always said that it was for ventilation. After a rain, the right headlight light was always on, even when the car was off, and after that the right signal and lamp will not turn on anymore. Dealer did changed the whole headlight assembly, however, the issue still there.


Exterior Lighting related problems in other Ford F-350 model year vehicles:



F-350 Service Bulletins
F-350 Safety Recalls
F-350 Defect Investigations