Adam2022

Is the EHC relay always the green one? Layout of components in my E61 2007 LCI is different to what is shown in all manuals.
Bought a replacement compressor kit from Arnott and it came with a black colour relay - and strict instructions that relay must be replaced as well otherwise warranty will be voided.
Anyone can confirm its always the green? What are the red ones for?

Not sure why they are so strict about replacing the relay - surely the new pump would have same power requirements (?).

Adam2022

They have part numbers stamped on them so confirmed that the green one was the EHC relay as the two red ones had different part numbers on them.

seanjordan20

From what I've always seen it's the green one. The other is for the rear hatch pump and I think the PDC

donpb

Because a worn out old relay could possibly cause the new part to fail prematurely, and then they'll be on the hook to replace it under warranty.

Swanny_UK

As a side note, that whole lot you can see there, sat in the wheel well - I relocated it all to the passenger side behind the access panel. No more water logging issues.

I got your PM btw, so sorry I missed it.

Alpine

Green for me too.

You can test with a circuit tester etc.

Just as Swanny_UK writes, do think of moving all this electronics out of the wheel well and put them up and to the side, like where the first aid kit is but on the opposite side. This way it won't be fried if water gets in, it's a five minute job and can save you money and hassle, especially if the modules get damp which is costly and hard to find replacements.