ON SEVERAL OCCASIONS SINCE I'VE OWNED THIS VEHICLE (I AM ORIGINAL OWNER) WHEN I STEP ON THE BRAKES HARD THE ENGINE ACCELERATES. RECENTLY IT HAS GOTTEN WORSE AND I KNOW I'M NOT TOUCHING THE ACCELERATOR. TODAY IT WAS SO BAD THE I WAS STANDING ON THE BRAKES WITH BOTH FEET AND BURNING RUBBER. I SHIFTED TO PARK AND THE ENGINE WENT ONTO MAX ACCELERATION. I SHUT OF THE ENGINE AND RESTATED AND FOUND IT WA…
2006 Mercury Grand Marquis cruise control problems
severe 29 complaints filed with NHTSA · avg repair $600
Complaints
29
Recalls
0
Crashes
6
Avg fix
$600
What owners are reporting 3 most recent
TL* THE CONTACT OWNS A 2006 MERCURY GRAND MARQUIS. WHILE DRIVING 45 MPH, THE VEHICLE ACCELERATED INDEPENDENTLY. THE CONTACT DEPRESSED THE BRAKE PEDAL, BUT THE VEHICLE DID NOT STOP. THE CONTACT WAS ABLE TO PLACE THE VEHICLE IN NEUTRAL AND DEPRESS THE BRAKE PEDAL IN ORDER TO STOP THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED OR REPAIRED. THE FAILURE WAS INTERMITTENT. THE DEALER WAS NOT CONT…
STOPPED AT RAILROAD CROSSING. TRAIN MOVING. 1 CAR AHEAD OF ME AT RAILROAD. STOP. I WAS COMPLETELY STOPPED. AFTER BEING STOPPED FOR ABOUT A MINUTE MY CAR SUDDENLY ACCELERATE AND SLAMMED INTO CAR IN FRONT OF ME PUSHING CAR FORWARD IN THE SIDE OF MOVING TRAIN. MY CAR ALSO SLAMMED INTO TRAIN AND WAS REVERSED AND STOPPED ON RAILROAD POST. DURING THIS TIME I COULD NOT STOP VEHICLE. THE VEHICLE WAS TR…
Common questions
How serious is the cruise control problem on the 2006 Mercury Grand Marquis?
It's a meaningful issue. 29 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $600.
At what mileage does the cruise control typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $600 for cruise control repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to cruise control?
No active recalls currently cover cruise control issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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