1997 Mercury Mountaineer Owner's Manual - Page 55
1997 Mercury Mountaineer Manual
Page 55 highlights
Controls and features When installing new batteries, be sure to place the positive (+) side down as marked. Snap the two halves back together. Replacing lost transmitters If a transmitter is lost, take your vehicle's transmitter to the dealer to have the remote entry system deprogrammed for the lost transmitter. This will prevent unauthorized use of the lost transmitter. You can purchase additional transmitters (up to four can be used) from your dealer. Use the following instructions to re-program the key fobs. Re-programming your key fob(s) 1. Insert key into ignition. 2. Rotate key to ON five times. DO NOT START THE ENGINE. Keep key in ON position the fifth time. Locks will lock/unlock by themselves. 3. Push UNLOCK on first key fob. Doors will lock/unlock to indicate key fob has been programmed. 4. Repeat Step 3 for each key fob to be re-programmed. 5. Turn ignition key to OFF. Verify each transmitter has been programmed by activating any button. 55