2008 Mercury Grand Marquis electrical NHTSA complaints: Electrical System

NHTSA — Electrical System Problems


really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
27,026 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2008 Mercury Grand Marquis electrical problems

electrical problem

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2008 Mercury Grand Marquis Owner Comments

problem #6

Nov 012016

Grand Marquis

  • 37,000 miles


Heating unit does not respond when heat option. Floor, mix, defrost options are selected and temperature control is at maximum hot

- Raleigh, NC, USA

problem #5

Nov 252015

Grand Marquis

  • miles
The digital speedometer and fuel readings keep flashing on and off sometimes staying off for short periods of time while engine is running. Is this something under warranty.

- West Monroe, LA, USA

problem #4

Aug 012013

Grand Marquis 8-cyl

  • miles
2008 Mercury Grand Marquis. Consumer states vehicle was recalled for poor steering. The consumer was in an accident whereby he was unable to turn the ignition key off and shift the gear.

- Lake Hopatcong, NJ, USA

problem #3

Jan 172012

Grand Marquis 8-cyl

  • 53,850 miles


Low beam headlights do not work. High beam works as well as daytime running lights. The dealer said the lcm module needs to be replaced but did not have one in stock and will call me when it comes in. My concern is this problem has been going on since at least the year 2000. Now I have a 100 deductible service warranty on this 2008 Mercury Grand Marquis so it will not be a great expense for me as it would be for others. This issue should have been resolved by now. My guess here is Ford is using overstocked earlier year model parts in the new models being built. I understand this is a defective soldering issue. Why no recall?

- Kensington, CT, USA

problem #2

Feb 042011

Grand Marquis 8-cyl

  • 64,316 miles
The aa control went out in April 2010. I had bought a Ford certified 2008 Grand Marquis that was over on the milage warrenty but still under the time warenty. The blower would only blow air throught the defrosters under the windshield. I brought it ti the dealer were I purchased it and after inspection determoned that the ac control unit #3W7Z*19980 went bad and was told it needed to be replaced @650.00 Ford would not honor the warrenty. I had it relaced. In Feb. 2011 it went out again. The part was covered under the 1 year warrenty but since I drive for a living Ford would not cover it beause of the miles. Thats another problem that should be looked into. I looked on the internet and found that there were numerous times the owners were having the same problem with this unit. My complaint is this is a part that should never go bad in a 2 yr. Time frame then go bad agin in less than a year. Whats going on here?

- Naperville, IL, USA

problem #1

Oct 152008

Grand Marquis 8-cyl

  • 6,992 miles
2008 Mercury Grand Marquis ls had an electrical outage. The consumer stated the trunk lid would not open using the remote control or by pushing the button. All of the lights went out on the instrument panel and the headlights went out as well.

- Farmersville, TX, USA

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