2005 Mercury Marquis

Suspension problem
2005 Mercury Marquis V8 Two Wheel Drive Automatic 49500 miles

I just had my rear tires changed at a local dealer.
Before starting the work, he turned off the air suspension switch located in the trunk of the car.
Everything was operating correctly going home.
The next morning I drove my car. While driving, it felt like I was in the old U.S. Army jeep. The suspension was locked. So, I stopped to see if the suspension switch was turned back on, it was. My question is, how do I release my suspension to make it operate normally?
January 27, 2010.

Hello mlewis3498

Welcome to

locate the air suspension relay in the battery junction box and replace,it may take care of the problem.
(check your email for this diagram)

Jan 27, 2010.