Should I disconnect the battery when doing thermostat???

[kado1976]

Originally Posted by jgold47

I dont think I've ever disconnected a battery while working on the car that didnt actually require, you know, disconnecting the battery (airbags).

Bleeding e3/4/5's is kind of a trip. The e46 guys have some writeups on this down to a science, but basically, turn the key to on, heat to 90, three dots to red, and fill until its full. BUT, by full, I mean when its actually full per the mark, not until the reservoir is full. Thats why people keep blowing up ET's.

Three dots to red????

And ET???

I dont get it