
What Causes Keys to Break and Ignitions to Seize
Keys and ignition cylinders endure enormous mechanical stress over time. A worn key that has been duplicated one too many times loses the precision cuts needed to engage tumblers cleanly, creating friction that can cause it to snap mid-turn. Ignition cylinders can seize for several reasons: a steering wheel lock engaging while the wheel is turned, a build-up of debris or worn wafer springs inside the cylinder, a partially inserted key that has been forced, or cold-weather contraction affecting metal tolerances — something Bronx winters make especially common. In older vehicles, corrosion inside the cylinder is another frequent culprit that tightens everything up until the key simply will not budge.
Understanding the root cause matters because the correct fix depends on it. A seized ignition caused by a locked steering column requires a different approach than one caused by a failed wafer spring or a jammed broken key fragment. Our trained technicians diagnose the specific failure before any tools touch your cylinder, which is why we are able to resolve most situations without causing additional damage to the vehicle or the surrounding trim.

