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-   -   Coolant leak: lower hose needs change. (http://www.bimmerfest.com/forums/showthread.php?t=651616)

pmpn8ez 10-13-2012 11:29 AM

Coolant leak: lower hose needs change.
 
The other day I got the message of low coolant. This morning when I went to wash my car same message appeared again. I knew something was wrong. Upon inspection I noticed the leak coming from the plastic piece on the low side of the radiator. Called BMW and that part is one piece of the lower hose. How easy is this piece to replace? Any help/tips much appreciated.

http://i1162.photobucket.com/albums/...psade1c36a.jpg

pmpn8ez 10-13-2012 11:40 AM

How much coolant to replace if drained?

wjjklj 10-13-2012 01:31 PM

Just either by the washer that goes on the temperature sensor or buy a new temp sensor with the washer. I think that is leaking instead of the hose.

pmpn8ez 10-13-2012 04:30 PM

Quote:

Originally Posted by wjjklj (Post 7132008)
Just either by the washer that goes on the temperature sensor or buy a new temp sensor with the washer. I think that is leaking instead of the hose.

You are exactly right. Went to buy the hose and the parts salesperson recommended same part instead if the hose. The rubber washer is known to wear and cause to leak coolant. Unfortunately they do not sell just rubber washer. I bought the sensor with new washer. $45. Pix of the old temperature sensor.

http://i1162.photobucket.com/albums/...ps6b7ed635.jpg

pmpn8ez 10-13-2012 04:43 PM

Seems like other models are having the same problem. Here's a thread from 6 series forums with a cheap fix from Home Depot O-Ring $3.
http://www.bimmerfest.com/forums/sho....php?p=6422410

wjjklj 10-13-2012 07:50 PM

They do sell the part. Part number is 13621743299. It costs $0.71 from thebmwpsrtstore.com. The sensor is part number 13621433077 and costs $19.08 from the same place.

pmpn8ez 10-13-2012 08:39 PM

My stealership only carried the sensor and not the O-Ring.

wjjklj 10-14-2012 07:39 AM

Glad you got it fixed. Still better than replacing the hose.

FLEXAMILLION 11-09-2012 01:53 PM

Quote:

Originally Posted by pmpn8ez (Post 7132230)
You are exactly right. Went to buy the hose and the parts salesperson recommended same part instead if the hose. The rubber washer is known to wear and cause to leak coolant. Unfortunately they do not sell just rubber washer. I bought the sensor with new washer. $45. Pix of the old temperature sensor.

http://i1162.photobucket.com/albums/...ps6b7ed635.jpg

mine is doing the exact same thing.... Im fixing it this weekend....

1bad540 11-09-2012 02:08 PM

I got snagged by the dealer on this , new hose, new sensor, ran around 600. :mad: didnt realise at the time it wasnt covered under cpo.

FLEXAMILLION 11-09-2012 02:12 PM

Sorry to hear that.... this Job, ill do myself... It's pretty easy...

pmpn8ez 11-09-2012 03:14 PM

You can buy the rubber seal at Home Depot. $2 for a pack of 10. There's a thread with details in the 6 series forum. They have the same issue with exact same part.

pmpn8ez 11-09-2012 03:17 PM

Here's the link:
http://www.bimmerfest.com/forums/sho...d.php?t=578644


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