Mercury Marquis owners have reported 2 problems related to steering column (under the steering category). The most recently reported issues are listed below.
Steering required significant effort to turn steering past approximately 30-45 degrees at the steering wheel. This required replacement of the upper and lower steering columns. Less than one month after replacement, steering now has a "jump" and a "clunk" at the same position in the steering wheel rotation. These issues where noticed when the vehicle was in motion. If stationary, it was extremely difficult to get the steering to turn at all beyond 30-45 degrees.
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all problems of the 2003 Mercury Marquis
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After parking the car on the side of the road, I got back in and the steering column wouldn't take the key. It wouldnt turn forward or backward just would fit in the keyhole. Steering column had to be fixed after I had the car towed. The car (2003 Mercury grand Marquis) was 6 months old with 6,000 miles on it. The dealership said they had this problem in the Mercury sables but not the Marquis.