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BigBob, Shop manager/technician
Category: Mercury
Satisfied Customers: 4837
Experience:  Shop Manager with 25 years experience
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How to replace a ignition cylinder on a 1994 mercury topaz

Resolved Question:

how to replace a ignition cylinder on a 1994 mercury topaz
Submitted: 7 years ago.
Category: Mercury
Expert:  BigBob replied 7 years ago.

  1. On models equipped with airbag, disarm airbag system.
  2. Disconnect battery ground cable.
  3. On tilt columns, remove upper extension shroud by unsnapping shroud from from retaining clip at 9 o'clock position.
  4. Remove five screws retaining the two trim shroud halves.
  5. Disconnect key warning buzzer electrical connector, then turn the ignition key to the RUN position.
  6. Place 1/8 diameter pin or small drift punch into hole in casting surrounding lock cylinder. Depress retaining pin while pulling out on lock cylinder to remove it from column housing.
  7. Install lock cylinder by turning it to RUN position and depressing retaining pin. Insert lock cylinder into lock cylinder housing. Ensure cylinder is fully seated and aligned in the interlocking washer before turning key to the OFF position. This will permit cylinder retaining pin to extend into cylinder housing hole.
  8. Rotate lock cylinder, using lock cylinder key, to ensure correct mechanical operation in all positions.
  9. Connect key warning buzzer connector, then install shroud.
  10. Connect battery ground cable and ensure proper operation. Ensure vehicle cannot be started in drive and reverse.
  11. On models equipped with airbag, rearm airbag system.

let me know if I can help further.

Good luck,

my information is not free, I have to pay for it, please don’t forget to accept, I don’t get paid until you do, because you made a deposit does not mean you have paid

BigBob and other Mercury Specialists are ready to help you
Customer: replied 7 years ago.
what if you dont have the key. I am doing this for a freind and she lost the key