2009 Mercury Mariner Hybrid engine NHTSA complaints: Vehicle Speed Control

NHTSA — Vehicle Speed Control Problems


really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
81,331 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.

2009 Mercury Mariner Hybrid engine problems

engine problem

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2009 Mercury Mariner Hybrid Owner Comments

problem #4

Jan 182016

Mariner Hybrid

  • 88,181 miles


I was approaching a stop sign going about 15 mph and the applied the brake. Instead of stopping, the car accelerated and I had to steer around a car in the intersection to avoid an accident. I applied the emergency brake and threw the car into park to stop it.

- Amherst, NY, USA

problem #3

Jan 212015

Mariner Hybrid 4-cyl

  • 75,000 miles
Vehicle loses all ability to control the throttle both while at highway speed and when pulling away from a stop. "wrench" fault indicator on the dashboard illuminates. Restarting the vehicle restores normal operating conditions until the issue reappears. There is no fault code on obdii reader after restarting the engine.

- Scottsdale, AZ, USA

problem #2

Aug 042014

Mariner Hybrid 4-cyl

  • 148,000 miles
My car, on 4-5 occasions now, has lost all power while traveling on the freeway at about 80 miles per hour. I called Ford because of the electronic throttle body customer satisfaction program and my vehicle does not qualify because of the assembly plant that the car was built at. I can attest that my vehicle is doing the same exact thing that is described in the accounts of the problem with the throttle - without question. I urge you to expand the program that Ford is being required to do for this massive (over 1 million vehicle) problem. This appears to me to go beyond a plant issue to an engineering issue with the part itself.

- San Diego, Ca, CA, USA

problem #1

Sep 152010

Mariner Hybrid

  • 14,143 miles
The contact owns a 2009 Mercury Mariner hybrid. The contact stated that after applying the brakes in the parking lot the vehicle accelerated. The vehicle did not respond to the brakes and did not stop until the vehicle crashed into a parked vehicle. After hitting the vehicle the rpms continued to increase and did not stop until the engine was turned off. The vehicle was towed to the dealer to be inspected. The police did not file a report because they said it was in a school parking. The failure and current mileages were 14143.

- Plano, TX, USA

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