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

1,685

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?

73,935

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

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