1999 Mercury Grand Marquis electrical system problems
15 owner complaints filed with NHTSA name the electrical system on the 1999 Mercury Grand Marquis — 9% of all complaints for this model year.
What owners report
“Vehicle was parked. I went to turn my headlights on. No headlights, turn signals, dash lights, hazard flashers or dome light. The 2003-2005 models were recalled for this same thing with the lcm failing. Please look into this as this is a serious safety issue.”
filed Jun 18, 2018
“Intake manifold failed (burned and disintegrated in the area of the thermostat ) and had to be replaced at considerable expense . Presently the speedometer fails intermittently dropping to zero at random moments. Most importantly the lights cut out intermittently usually when the heat is on and on…”
filed Apr 12, 2017
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other Grand Marquis years
| Year | Reports | Share |
|---|---|---|
| 2010 Grand Marquis | 3 | 13% |
| 2009 Grand Marquis | 4 | 15% |
| 2008 Grand Marquis | 9 | 12% |
| 2007 Grand Marquis | 1 | 1% |
| 2006 Grand Marquis | 8 | 6% |
| 2005 Grand Marquis | 75 | 15% |
| 2004 Grand Marquis | 40 | 12% |
| 2003 Grand Marquis | 51 | 14% |
| 2002 Grand Marquis | 10 | 13% |
| 2001 Grand Marquis | 13 | 8% |
| 2000 Grand Marquis | 17 | 10% |
| 1998 Grand Marquis | 15 | 10% |
Other reported problem areas on the 1999 Mercury Grand Marquis
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.