Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMERCURY2010MOUNTAINEER 2WD V8-4.6LREPAIR AND DIAGNOSISSTARTING AND CHARGINGSTARTING SYSTEMIGNITION SWITCHIGNITION SWITCH LOCK CYLINDERSERVICE AND REPAIRIGNITION LOCK CYLINDER - FUNCTIONAL
2010 Mercury Mountaineer 2WD V8-4.6L
Ignition Lock Cylinder - Functional
2010 Mercury Mountaineer 2WD V8-4.6LSECTION Ignition Lock Cylinder - Functional
Ignition Lock Cylinder - Functional
Removal and Installation
NOTE: When any new lock cylinder is installed, the driver door and ignition lock cylinders should be installed as a set. This eliminates carrying an extra key which fits only one lock. If a new key is used, the new key code number is stamped on a metal tag attached to the key.
NOTE: Individual lock cylinders are repaired by discarding the inoperative cylinder and building a new lock cylinder using the appropriate lock repair package. The lock repair package includes a detailed instruction sheet to build the new lock cylinder to the current key code of the vehicle.
1. With the ignition switch in the RUN position, press the locking pin with a suitable tool (such as a pick), and remove the ignition lock cylinder.
2. If a new lock cylinder with keys is replaced, the new Passive Anti-Theft System (PATS) keys must be programmed. For additional information, refer to Key Programming Using Diagnostic Equipment in Antitheft and Alarm Systems. Using Diagnostic Equipment
3. To install, reverse the removal procedure.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.