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Jeep M151 Ignition Switchs

Jeep M151 Ignition switchs

Starting at $26.95, AutoBuffy stocks 1 ignition switches from Standard Ignition to fit your Jeep M151. The ignition switch is the electrical component behind the key cylinder that sends power to the starter, fuel system, and accessories. When it fails, your Jeep M151 may not start, lose power mid-drive, or strand you without warning.

Signs your Jeep M151 needs a new ignition switch

  • Engine cranks but won't start, or starter doesn't engage at all when the key is turned to the 'Start' position
  • Vehicle starts normally but stalls shortly after, often because the switch loses contact in the 'Run' position
  • Accessories such as the radio, wipers, or dash lights cut out intermittently while driving
  • Key turns freely past normal resistance with no electrical response — no dash lights, no chime
  • Vehicle starts only after wiggling or holding the key in a specific position
  • Excessive heat or a burning smell near the steering column, indicating a failing switch drawing excess current

Which ignition switch should you buy for your Jeep M151?

Ignition switches are sold as the electrical switch only, or bundled with the lock cylinder. Before ordering, confirm whether your problem is electrical (the switch) or mechanical (the cylinder), since they are separate components on most Jeep M151 applications. Also verify whether your Jeep M151 requires a switch with a specific number of positions or integrated anti-theft/passlock contacts.

OE-Replacement Switch (electrical only)
Best for
Vehicles where the lock cylinder and key are still good
What you get
Direct plug-and-play fit; matches original connector, position contacts, and passlock wiring exactly
Switch + Lock Cylinder Kit
Best for
Vehicles with a worn or damaged lock cylinder, or a lost/broken key
What you get
Complete assembly including matched key; eliminates need to rekey or source parts separately
Standard/Economy Grade
Best for
High-mileage vehicles or budget repairs where longevity is secondary
What you get
Meets minimum OE specs at lower cost; suitable when resale value is low
Premium / OEM-Spec Grade
Best for
Daily drivers, newer vehicles, or cases with prior switch failures
What you get
Heavier-duty contacts, better heat resistance, and longer service life under repeated use

Ignition switchs brands we stock for your Jeep M151

Standard Ignition
1 option · from $26.95

Replacing the ignition switch on a Jeep M151

Moderate⏱ 1–2 hoursScrewdrivers (flathead and Phillips)Trim panel removal toolsSocket and ratchet setElectrical tape or heat-shrink connectorsMultimeter (recommended for diagnosis)

Replacing an ignition switch on a Jeep M151 typically involves removing the steering column trim panels to expose the switch housing, disconnecting the electrical connector, and unbolting or unclipping the old switch before installing the new one in reverse order. Disconnect the negative battery terminal before starting to prevent accidental shorts, particularly important on vehicles with airbag wiring routed near the column. If your Jeep M151 has a passlock or immobilizer system, perform any required security relearn procedure after installation before attempting to start the engine.

Frequently asked questions

How much does it cost to replace ignition switches on a Jeep M151?
Parts start at $26.95 on AutoBuffy. A shop typically charges one to two hours of labor on top of the part cost, though column-mounted switches with anti-theft wiring or airbag system proximity can push labor higher. Doing it yourself with the right tools brings total cost close to the part price alone.
Can I drive my Jeep M151 with a bad ignition switch?
You should not rely on a failing ignition switch for daily driving. A switch that loses contact in the Run position can cut power to the fuel pump or ignition system while the vehicle is moving, causing a sudden stall at highway speed. This is a safety risk, not just an inconvenience.
Is the ignition switch the same as the ignition lock cylinder on a Jeep M151?
No, they are two separate parts. The lock cylinder is the mechanical tumbler your key physically turns. The ignition switch is the electrical component it actuates. Either can fail independently. If your key turns but nothing happens electrically, the switch is the likely culprit. If the key won't turn at all, suspect the cylinder.
Will I need to reprogram anything after replacing the ignition switch on my Jeep M151?
On most Jeep M151 applications, swapping the electrical switch alone does not require programming. However, if your Jeep M151 uses a passlock, passkey, or transponder-based immobilizer system with wiring integrated into the switch, the new switch may need to be relearned by the vehicle's security module. Check your service manual or confirm with a dealer before ordering.
How long does an ignition switch last on a Jeep M151?
Ignition switches typically last many years under normal use, but lifespan varies with how often the vehicle is started, the weight of items on the keyring pulling down on the switch, and exposure to heat in the steering column. Heavy keychains are a well-documented cause of premature ignition switch wear across many vehicle types.
Can a bad ignition switch drain the battery on a Jeep M151?
Yes. A faulty ignition switch can fail to fully cut power to certain circuits when the key is removed, leaving accessories, the fuel pump relay, or other loads energized. This creates a parasitic draw that drains the battery overnight or within a few days, and is sometimes misdiagnosed as a battery or alternator problem.

Shop ignition switchs by year for the Jeep M151

19701969196819671966196519641963

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