1. Open the glove box of your Peugeot 206.
2. Locate the two plastic clips on the sides of the glove box.
3. Press the clips inward and pull the glove box towards you to remove it.
4. Once the glove box is removed, you will see the BSI unit behind it.
5. The BSI unit is a black box with several connectors and plugs attached to it.
6. Locate the relay for the rear wiper. It is usually labeled "Rear Wiper Relay" or "RW Relay."
7. The relay is a small black box with two or three pins.
8. To remove the relay, gently pull it out from its socket.
9. Inspect the relay for any damage or corrosion. If it is damaged, replace it with a new relay.
10. Once you have replaced the relay, reinsert it into its socket and reinstall the BSI unit.
11. Replace the glove box and close it.
Please note that the location of the BSI unit and the rear wiper relay may vary slightly depending on the specific year and model of your Peugeot 206. If you are unsure about the location, it is recommended to consult the owner's manual or seek assistance from a qualified mechanic.