2010 mariner will start after sitting in sun on hot days but none of the electronics work for a few minutes, windows won't work, radio won't work, car won't go into gear???


Asked by May 22, 2014 at 10:00 PM about the 2010 Mercury Mariner Base

Question type: Maintenance & Repair

3 Answers


I don't know exactly how hot you are talking here but a closed up vehicle gets very,very hot in the sun and I'd guess that that extreme heat is affecting some circuit. Sounds weird but maybe leave a window open a crack, find some shade and get one of those fold up screen things you see in car front windows sometimes. I always wondered why people had those giant paper sun glasses in the front window.


NE Ohio, both times the temp was in the high 70's to low 80's. Car sat all day in the sun. Dealer has no clue. Like I said, the car will start but nothing will work, no horn, no lights, no windows, no radio, no a/c, and it won't go into gear. It is like the whole car is fried. After a few minutes, everything is fine! Very weird. Anybody else experience this???

1 of 1 people found this helpful.

I read a few articles on tests done on the effect of sun on a closed car, results showed the air temp rising upwards of 130 degrees and the dash-board getting as hot as 190. Your dash has a lot of electronics. Put those temps together with humidity and you have a sauna. Would you be surprised if your digital watch acted a bit off after being in a sauna for 8 hours. It is obvious that your problem is related to the heat/humidity because everything works after the interior cools a tad. Now car manufacturers do a pretty good job trying to build cars to withstand extreme conditions but some circuit in your's is acting up. Stay out of the sun or pay a electronics tech $100/hour to test every possible circuit and determine which 50 cent piece of wire is screwing up in the heat!

Your Answer


Looking for a Used Mariner in your area?

CarGurus has 890 nationwide Mariner listings starting at $1,250.


Mercury Mariner Experts

  • #1
    Tom Demyan
  • #2
  • #3
View All

Related Models For Sale

Used Ford Escape
914 Great Deals out of 105,234 listings starting at $550
Used Mercury Mountaineer
8 Great Deals out of 784 listings starting at $2,367
Used Ford Explorer
825 Great Deals out of 64,070 listings starting at $2,000
Used Chevrolet Equinox
792 Great Deals out of 75,245 listings starting at $895
Used Ford Edge
667 Great Deals out of 52,490 listings starting at $3,000
Used Jeep Grand Cherokee
791 Great Deals out of 73,448 listings starting at $500
Used Honda CR-V
545 Great Deals out of 66,849 listings starting at $1,800
Used Mazda Tribute
8 Great Deals out of 613 listings starting at $2,000
Used Toyota RAV4
482 Great Deals out of 66,460 listings starting at $1,995
Used Jeep Liberty
109 Great Deals out of 6,008 listings starting at $1,300
Used Honda Pilot
435 Great Deals out of 38,954 listings starting at $999
Used GMC Envoy
28 Great Deals out of 1,494 listings starting at $1,800
Used Toyota Highlander
437 Great Deals out of 44,255 listings starting at $1,750
Used Mercury Mariner Hybrid
3 Great Deals out of 56 listings starting at $3,494
Used Nissan Rogue
557 Great Deals out of 76,999 listings starting at $2,999

Used Cars For Sale

2011 Mercury Mariner Base For Sale
3 listings starting at $7,481
2010 Mercury Mariner Base For Sale
47 listings starting at $4,995
2009 Mercury Mariner Base For Sale
11 listings starting at $3,950

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.