Turn Signal Relay

Asked by GuruW7M2V May 31, 2018 at 12:12 PM about the 2002 Ford F-250 Super Duty XLT 4WD Extended Cab SB

Question type: Maintenance & Repair

Just the other day while it was in the low 90's here I walked out to my truck ticking. As I investigated the sound I found it was the turn lamp relay. it was going by itself and was very rapid. It was not flashing lights on the cluster or exterior but was activated within the relay itself. I thought maybe due to the heat and and after running the AC then parking in the shade with windows open a couple hours later it had stopped. Well just yesterday after work ( it had been raining off and on all day) everything was fine till about a a mile maybe less driving thru town it started again and hasn't stopped. I found pulling the 10A fuse will stop it but it starts as soon as fuse is replaced. I also disconnected the bet for a short time and pulled the fuse panel out and checked for moisture around the GEM at the recommendation of local FORD dealer but found not moisture. If anyone has any ideas it is greatly appreciated.

2 Answers

I am experiencing the same problem today, conditions- damp misty rain all day, cool about 48deg.odd thing is I found that while the flasher is clicking and truck is off (2003 F250SD) turn signals will function. again ignition off, key out. flash rate is odd in this condition. flash rate returns to normal if key is inserted and ignition turned on. I suspected a relay somewhere in the ignition system frozen in the closed position. or possibly a bad ignition switch. I have heard of issues with the molex plug in the steering column. I will be doing a LONG HARD investigation of this tomorrow, and check back with. results.

Your Answer:

CarGurus Experts

  • #1
    Tracy Hooks
    Reputation
    3,600
  • #2
    NorCalEvan
    Reputation
    2,430
  • #3
    David Gray
    Reputation
    1,810
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-350 Super Duty
50 Great Deals out of 1,599 listings starting at $5,000
Used Ford F-150
286 Great Deals out of 14,031 listings starting at $3,500
Used Chevrolet Silverado 2500HD
35 Great Deals out of 1,567 listings starting at $5,990
Used GMC Sierra 2500HD
29 Great Deals out of 2,171 listings starting at $5,500
Used Dodge RAM 2500
3 Great Deals out of 30 listings starting at $7,900
Used Chevrolet Silverado 1500
199 Great Deals out of 7,276 listings starting at $6,495
Used GMC Sierra 1500
154 Great Deals out of 8,222 listings starting at $5,500
Used Toyota Tundra
38 Great Deals out of 956 listings starting at $9,898
Used Ford F-450 Super Duty
125 listings starting at $39,500
Used Toyota Tacoma
45 Great Deals out of 869 listings starting at $9,975

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.