I connect my positive cable to battery after recharging it. head lights and windshield washer pump come on without key in ignition. where do I start looking for this cause?

Asked by tleeb Oct 15, 2016 at 02:12 PM about the 2005 Ford Mustang V6 Premium Coupe RWD

Question type: Maintenance & Repair

Battery issues electrical

1 Answer

200

The Head lights I get if the headlight switch is in the Auto Position, but should time out after the preset time, call it 1 minute. Turn the light switch back to the Off position. The Windshield washer pump motor is a trip. the only thing that should turn that on is the pushbutton on the column with the key on. Sounds like the ignition switch Relay could be stuck on. Do you live in a dusty environment? The Relay should be in the Fuse block panel. Read the cover of the fuse box and start pulling relays until the lights and pump motor go off. Do you have rodents chewing on the wiring harness? Most of the relays can be interchangeable as a test. When you find the stuck one, NAPA, or another quality parts house should have them for less then $20 each.

Your Answer:

CarGurus Experts

  • #1
    Gene Arnett
    Reputation
    3,160
  • #2
    Bob Beaman
    Reputation
    2,690
  • #3
    rst429
    Reputation
    2,640
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Corvette
22 Great Deals out of 1,004 listings starting at $19,500
Used Dodge Charger
44 Great Deals out of 607 listings starting at $4,888
Used Ford F-150
304 Great Deals out of 15,343 listings starting at $1,954
Used Ford Mustang SVT Cobra
4 listings starting at $19,900
Used BMW 3 Series
72 Great Deals out of 1,174 listings starting at $1,995
Used Chevrolet Silverado 1500
212 Great Deals out of 5,938 listings starting at $3,995
Used BMW M3
7 Great Deals out of 93 listings starting at $15,995
Used Honda Civic
151 Great Deals out of 3,404 listings starting at $2,495
Used Lexus IS
27 Great Deals out of 339 listings starting at $5,800
Used Toyota Camry
53 Great Deals out of 957 listings starting at $2,212

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.