When you turn the key to start your engine, the cylinder you put your key into either is itself, or is connected to the ignition switch depending on the vehicle.
Why repair your Heater Control Valve
The ignition switch is not a routine maintenance item. If the shop is indicating there is a problem with this component, you were likely having a problem with the vehicle (like the key was getting stuck, it was more difficult to start, would not start or may have even been towed into the shop)..
Consider making your Ignition Switch appointment through CarAdvise. CarAdvise makes car care simple and guarantees that you’ll pay less than retail price on all car maintenance services.