One problem related to battery has been reported for the 1997 Mercury Grand Marquis. The most recently reported issues are listed below.
My problems began almost immediately after purchase. The abs and the power loss, I consider to be life threatening. The power losses occurred during rush hour, after dark and while driving alone. Considering the fact that I am female, I consider this to be a two-fold danger. Ford has offered to pay me $2000 toward the trade-in of my car (cloverleaf to pay 17,500 for mine). This still has me paying in the neighborhood of 5500 for a 99 model. I did not purchase my car to be trading in after a year and none of this is my doing nor my choice. The car I was driving before the purchase of my new one (it wasn't a Ford product) had 150,000 miles. I no longer felt safe in it. It appears that I was wrong. I probably was safer in it than in the new one. I realize that none of my problems will qualify my car for the lemon law, however, considering the numerous problems I have had, I most defineately consider it to be a lemon.