Any problem with the fuse box and light switch will affect the brake lights. In case the fuse is blown, change it with a new one. Remember that the new one has to have the same amperage as the old unit. Besides, try to find out the cause of the blown fuse. Otherwise, it will be a recurring problem. The electrical ground The horn works fine when the ignition is off, so the horn and switch mechanism are working. When the ignition is on the horn doesn't work which is very strange, and obviously this is the only time you need the horn, when you're actually driving. I have checked the horn fuse to be safe and it's fine. I then checked all the other fuses both under Citroen Berlingo Van Relay Switch For Glow Plugs Changed Okay For While Now When Switching Ignition On No Glow Light Comes On And Cannot Start. Can You Help? How Do You Change Glow Plugs On A Citroen Berlingo Van 1.9d 600.? I Have A 5 Year-old Citroen Berlingo Van Which Has Problems With Cold Start After 7 Hours. Any Advice? We bought a replacement at the local citroen dealer - cost £8. Pull the old one out, put the new one in. Heater blower fan now works again. Main clue to this diagnosis is that the fan was dead on all settings. If the resistor is the problem, it sounds like the fan will only work on full power - ie 4. Here is the location of the relay: The other thing I found, is there can be an audible warning when your key battery is getting low, it is supposed to post a message on the info screen in the dash or instruments to say " Key battery low" or something similar. Oil level is good and reading OK on the dash when I turn key in ignition. . 395 187 187 415 177 112 52 318

citroen berlingo ignition barrel problems