1. Check the Obvious:
* Battery: Start with the simplest thing. Replace the battery in your key fob. A weak battery is the most common cause of remote locking problems. Even if the key seems to work sometimes, a low battery can cause intermittent failures.
* Key Fob Condition: Inspect the key fob for physical damage. Cracks or water damage can disrupt the internal electronics.
* Key Fob Synchronization: Some Peugeot 206 models require resynchronization of the key fob to the car's receiver. Consult your owner's manual for the specific procedure. This usually involves a sequence of button presses within a certain timeframe.
* Signal Interference: Metal objects or electronic devices (like cell phones) near the car can interfere with the signal. Try moving away from potential interference sources.
2. Check the Central Locking System Itself:
* Internal Locks: Try unlocking and locking the car manually using the key in the driver's door lock. If this doesn't work, the problem lies within the central locking mechanism itself, not the remote.
* Fuse Check: Consult your owner's manual to locate the fuse for the central locking system. Check if it's blown and replace it if necessary.
* Central Locking Actuators: These are the motors in each door that actually do the locking and unlocking. A faulty actuator in one or more doors will prevent the system from working correctly. You might hear a clicking sound from a faulty actuator when you press the remote. This usually requires replacement and is a more involved repair.
3. More Advanced Troubleshooting:
* Receiver Unit: The car has a receiver that picks up the signal from the key fob. This unit can fail, requiring replacement. This is usually a more specialized repair and likely requires a qualified mechanic.
* Wiring Issues: A break or short circuit in the wiring harness connecting the receiver to the actuators or the car's computer can disrupt the central locking system. This requires tracing the wiring to identify the fault – a job best left to a mechanic familiar with the Peugeot 206's wiring.
* Body Control Module (BCM): The BCM is the car's main computer. A faulty BCM can affect many systems, including the central locking. Diagnosing and replacing a BCM is complex and usually requires specialized diagnostic tools.
4. Seeking Professional Help:
If you've exhausted the above steps without success, it's best to consult a qualified mechanic, especially if you're not comfortable working with car electronics or mechanics. They'll have the diagnostic tools and expertise to pinpoint the exact problem and carry out the necessary repairs. Mentioning the specific symptoms you're experiencing will help them diagnose the issue more efficiently.
Important Note: Before attempting any repairs yourself, always disconnect the car's battery negative terminal to prevent accidental short circuits. If you're unsure about any step, it's always safer to seek professional help.
