Newby here, I feel like I’ve read through everything I can possibly read through for the past four days. As I have practically turned myself upside down in my 2008 E85 Z4 to remove the fuse panel in order to access the relay switches on the back. I am still unsuccessful, as seen in the picture attached with the yellow circle around the section closest to the passenger side airbag. I can not seem to remove this part of the plastic frame, even with all screws removed… And this is where I’m stuck. I am trying to access the back of the fuse panel in order to hopefully replace the relay switch for the radiator fan.. As of now the only way I am been able to drive the car is to start the car and then disconnect the fan switch under the hood and then reconnect it. This seems to override the relay switch and the car does not overheat. From what I understand the best start to fix a problem is to replace a relay switch. If you have any other words of wisdom, please let me know. In addition, I am also looking forward to hearing what is the best transmission fluid and engine oil for this type of car. Currently this car has just had new control arms and radiator reservior, racing suspension and brakes added as well as new coil packs and fuses. Otherwise everything else is original..
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Radiator fan relay switch
- Thread starter TrackMyZ
- Start date
I finally got to it. For me it turns out that the a former owner apparently glued along the piece you are suppose to push up on (see pict) 
so I turned upside down and stuck my feet out the window. Lol. I was able to get on the other side of the panel enough to disconnect it without removing the interior plastic panel in the pict. Unfortunately they were not the relays I was looking for. But I tested those and they are all good.
Sooooo, it seems the relay is attached the plug I have been pulling in order to override and restart the fan? I was told it was 5 pin 12v relay.
so I turned upside down and stuck my feet out the window. Lol. I was able to get on the other side of the panel enough to disconnect it without removing the interior plastic panel in the pict. Unfortunately they were not the relays I was looking for. But I tested those and they are all good.Sooooo, it seems the relay is attached the plug I have been pulling in order to override and restart the fan? I was told it was 5 pin 12v relay.
