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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 09-05-2013, 10:32 AM   #1
Zac 330i
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transmission problem

Hi
There please advice I have a steptronic gearbox for my e46 and it is showing the transmission sighn. 2days ago oil started to leak out the gear box what could it be? is my gearbox broken down?,
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Old 09-05-2013, 10:56 AM   #2
SamDoe1
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Where's it leaking from? Is it the actual transmission or the differential?
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Old 09-05-2013, 11:07 AM   #3
Zac 330i
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Re: transmission problem

Hi sam

it's leaking bwtween the gearbox and engine. after the leak the car started to drive hard in a way that the raves went up to 7000.,I took off the manifold to see for oil leaks on the block and head but I found no oil leaks there
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Old 09-05-2013, 11:19 AM   #4
SamDoe1
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That sounds like a rear main seal leak. Is the fluid brown or reddish? Stop driving it immediately until you get the leak fixed.

Last edited by SamDoe1; 09-05-2013 at 11:20 AM.
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Old 09-05-2013, 11:33 AM   #5
Zac 330i
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Re: transmission problem

The oil is brownish. but what about the sign showing showing does that mean I need a new gearbox or repairing the seal will be the problem solving?
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Old 09-05-2013, 03:34 PM   #6
SamDoe1
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Quote:
Originally Posted by Zac 330i View Post
The oil is brownish. but what about the sign showing showing does that mean I need a new gearbox or repairing the seal will be the problem solving?
If the oil is brownish then it's likely not ATF unless you've never changed the transmission fluid. ATF is naturally red so as to differentiate itself from engine oil.

The only thing between the engine and transmission that can leak (unless you have a cracked block) is the rear main seal which seals the output shaft to the engine block and oil pan.
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