Ignition repair: signs, causes and solutions

Ignition problems tend to start small: a key that needs jiggling, or one that sticks on cold mornings. Left alone, they can leave you stranded, and a failing ignition switch can affect the car while driving. Here's what to look for.

Common signs

• The key won't turn, or only turns after jiggling.
• The key gets stuck and won't come out.
• The key turns with no resistance at all.
• The dash flickers or the engine cuts out when you go over bumps.
• The car won't start but the lights and radio work.

Common causes

Worn keys. Years of use wear the cuts down, so the key no longer lifts the pins correctly. A new key cut to factory specification often solves it.

Worn ignition cylinder. The cylinder wears just like the key. Repairing or replacing it restores smooth turning.

Steering lock. If the wheel is turned against the lock, the key won't turn. Turning the wheel gently while turning the key releases it.

Electrical switch faults. The switch behind the cylinder can fail, which is a mechanic's job rather than a locksmith's.

Repair or replace?

A cylinder that's worn but intact can sometimes be rebuilt. One that's damaged, for example after a theft attempt, usually needs replacing, and new keys cut to match. The technician should explain which and why before starting.

Cost

The price list lists ignition change for any vehicle from $100, plus the $29 service call. A mobile locksmith works where the car is, which avoids a tow. See the automotive locksmith page.