Vehicle Data Hub

2003 Mercury Grand Marquis electrical system problems

52 complaints about electrical system have been filed for the 2003 Mercury Grand Marquis, which is 12% of all its NHTSA complaints. It is the 2nd most reported problem area for this model year.

At a glance

Complaints
52 12% of this year's complaints
Typical mileage
95,000 miles 37 complaints with mileage
Crashes and fires
4 and 2
Injuries and deaths
1 and 0

Source: NHTSA owner complaints

When electrical system problems show up

Electrical system complaints by mileage, 2003 Mercury Grand Marquis Complaints by odometer reading in 20,000-mile steps. The median is about 95,000 miles. 0k to 20k miles: 5 complaints 20k to 40k miles: 1 complaints 40k to 60k miles: 5 complaints 60k to 80k miles: 4 complaints 80k to 100k miles: 6 complaints 100k to 120k miles: 2 complaints 120k to 140k miles: 5 complaints 140k to 160k miles: 5 complaints 160k to 180k miles: 2 complaints 180k to 200k miles: 0 complaints 200k+ miles: 2 complaints 040k80k120k160k200k miles Typical: 95,000 miles
Based on 37 complaints that include mileage. 30% were reported before 60,000 miles. The amber marker shows the median: half of these complaints happened before that mileage.
View the numbers
MileageComplaints
0k to 20k miles5
20k to 40k miles1
40k to 60k miles5
60k to 80k miles4
80k to 100k miles6
100k to 120k miles2
120k to 140k miles5
140k to 160k miles5
160k to 180k miles2
180k to 200k miles0
200k+ miles2

What the data shows

Of the 37 electrical system complaints that report mileage, the median is about 95,000 miles, and 30% were reported before 60,000 miles.

These complaints mention 4 crashes, 2 fires, 1 injury.

What owners wrote

Its the LCM L(IGHT CONTROL MODULE)...HEAD LIGHTS went out on me one night coming down [XXX] causing me to wreck in a ditch and hitting a light pole

January 2024 CrashInjury

Tl* the contact owns a 2003 mercury grand marquis. While driving various speeds, all the gauges on the instrument panel failed to provide the accurate reading. In addition, the air suspension that controlled the shocks failed to hold air. The vehicle was not repaired. The manufacturer was not contacted. The approximate failure mileage was 123,000.

Reported at 123,000 miles, July 2017

Other problems reported for the 2003 Mercury Grand Marquis

Electrical system problems in other years

Electrical system problems across all Mercury models