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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 06-07-2008, 02:32 PM
PaoloT PaoloT is offline
Join Date: May 2008
Posts: 9
Mein Auto:
ATF hose leak?

I believe my car '98 528i is leaking atf from the hose that comes out of the reservoir, to where it connects near the radiator. Made a stop at the local auto parts store but there parts computer did not have a pic to compare to and didn't have the part in stock; said the transmission hose with quick disconnect would run about $75. Seems like that must be the wrong part. This hose is the second one down and in the photos it can be seen running from the reservoir below the radiator hose and ending next to the radiator. There is one small drop at the bottom of the hose but the entire hose has some residue on it and the bottom plastic engine cover is very grimy from road debris and fluid.
Anyone have any DIY tips for this proceedure?
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Old 06-07-2008, 02:47 PM
Ryan M Ryan M is offline
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It's not a transmission line. It's your power steering fluid hose. It goes from the reservoir (the black one that says "ATF ONLY") to your power steering fluid cooler behind your radiator. Your power steering system uses ATF.
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Old 07-01-2008, 05:32 PM
TRIXPD TRIXPD is offline
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Mein Auto: 92 318i, 97 528i, 99 740i
I saw the same thing on my 97 528 this morning and confirm that it is the power steering fluid leaking.
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