Disco 2 Losing Water. Has anyone fitted BMW expansion tank.

Aghhhhhhhhh.

No out of water.

Will try tomorrow.

Coolant Level Sensor fits BMW 318 E30 1.8 89 to 91 61311384739 Febi Quality New


I can confirm that in a cup of water no current flows. Out of water with the float downs it completes the circuit.
Dont know why ? But saves me a few minutes connecting a relay.
Sorry about the picture quality. Maybe i have purchased a cheap knock off level sensor by mistake.

Too bad mines were not the same

sierrafery said:

Did you check it in water ? If not check again, i fitted two myself and both were closed with full tank

Click to expand...

+1, they definitely work that way round therefore a relay is required.

Mine is now fitted. And i can confirm no relay required as my paricular sensor obviously works in reverse.
Fitted with a little 12v buzzer. Connected to the spare f30 outlet as identified in previous threads by Mr SF.

In water no circuit. Raised up out of water a connection is made and buzzer goes off. Just sat now warming the truck up for its first run since fitting new temp gauge ( now att 55). Repaired cooler and level sensor.
Weeping a bit from temp sender adaptor but apart from that all good so far.