What Causes a Car Door Not to Unlock with the Key?

[DiPaislee]

Reasons why the car key cannot be turned and the door won't open: It may be due to the steering wheel being locked, which is a common anti-theft feature in many vehicles. Try gently turning the key with your right hand while simultaneously turning the steering wheel slightly with your left hand—this should naturally unlock the steering wheel. Below are details about common car faults: 1. Poor Idle Operation: Symptoms may include unstable idling, engine shaking, excessively high idle speed (above the specified upper limit), excessively low idle speed (below the specified lower limit), or rough idling. These issues may be related to faulty or malfunctioning components such as fuel injectors, oxygen sensors, air flow sensors, or exhaust gas recirculation valves, as well as poor connections in control circuits or vacuum lines. 2. Excessive Fuel Consumption: Common causes include clogged filters restricting airflow, coolant temperature being too high or too low, incorrect ignition timing, valve timing, or idle adjustment, wear and failure of engine or major components, low cylinder pressure, leaks in fuel or air lines and connections, or faults in sensors, connectors, wiring, the ECU, or its connectors in the electronic control system.