2007 Mercury Marquis door locks

2007 MERCURY MARQUIS
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JONESBETTY
  • MEMBER
  • 1 POST
the door locks, inside lights and rear defroster only work at times. it is getting to where they only work when the car is running and most of the time not then either. what should i look for
Mar 13, 2015 at 5:30 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
it might be modules for the lights and doors. so have a pro scan for codes for those. for the defogger check the fuse and relay for corrosion in fuse box under hood it will be marked on cover. clean the prongs on relay and use dielectric grease on them. that might fix it other than that because it is intermittent a pro will need to look at it.
Mar 13, 2015 at 6:18 AM
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