Dash lights and gages


Asked by Nov 20, 2017 at 02:57 PM about the 2006 Mercury Grand Marquis

Question type: Maintenance & Repair

When I start my car the gages and light
and odometers come on for a few minutes
but shut off and stay off but randomly
flicker on and off as I drive not sure what
would cause this

3 Answers


it appears that you have malfunctioning gages. this is most probably a malfunctioning sensor at the transmission speed detection unit (SDU) take your automobile to your local shop and get a qualified technician to diagnose your malfunctioning SDU


That would make the lights on the gages and warning lights cut in and out along with eat and gas needle?

1 of 1 people found this helpful.

This is a known problem with these cars. My '08 Grand Marquis is doing the exact same thing. There's a wiring harness that gets pinched between the top of the steering column and the bottom of the instrument cluster. Over time the wires get chafed and an intermittent bad connection to the instrument cluster is created. The steering column must be removed to access the wiring harness for repair. Best to let your local Ford Dealer fix it. HTH. -Jim

1 of 1 people found this helpful.

Your Answer

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 3 nationwide Grand Marquis listings and the tools to find you a great deal.

Postal Code:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
  • #2
  • #3
View All

Related Models For Sale

Used Lincoln Town Car
13 listings starting at $1,850
Used Chevrolet Impala
158 Great Deals out of 1,114 listings starting at $2,950
Used Dodge Charger
55 Great Deals out of 787 listings starting at $4,500
Used Ford F-150
551 Great Deals out of 10,128 listings starting at $3,490
Used Ford Mustang
1,056 listings starting at $3,900
Used Cadillac DTS
23 listings starting at $5,100
Used Chrysler 300
68 Great Deals out of 830 listings starting at $3,295
Used Honda Accord
65 Great Deals out of 1,274 listings starting at $1,000
Used Chevrolet Tahoe
4 Great Deals out of 900 listings starting at $8,500
Used Cadillac DeVille
18 listings
Used Ford Taurus
38 Great Deals out of 337 listings starting at $5,555
Used Chevrolet Silverado 1500
163 Great Deals out of 12,136 listings starting at $1,895
Used Buick LaCrosse
8 Great Deals out of 328 listings starting at $5,950

Used Cars For Sale

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.