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Anonymous Posted on Jun 02, 2014

What causes transmission fluid leak on 2007 bmw 750i

1 Answer

HalfmoonUSA

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  • Expert 145 Answers
  • Posted on Jun 05, 2014
HalfmoonUSA
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You do not say where the leak is; front, middle, or back of transmission.
There is a 210mm x 3mm o-ring and 128mm x 3mm o-ring for mating parts. There is a fill plug with o-ring on the side, a drain plug with o-ring and an oil pan gasket on the bottom. Common causes are age of the o-ring or gasket material, pinching of the o-ring during installation, or failure to have a clean surface for the gasket during installation. This assumes all fasteners have been properly tightened.

5 Related Answers

Anonymous

  • 55 Answers
  • Posted on Mar 08, 2009

SOURCE: transmission fluid leaking on a bmw 5451.

check your other post from yesterday please, i just responded to it.

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Anonymous

  • 5158 Answers
  • Posted on Jun 27, 2009

SOURCE: BMW 325i BAD transmission fluid leak/gush

i have to admit without more detail it's hard to say.... my educated guess would be that one of the hoses to the transmission cooler has blow and needs to be replaced. do NOT drive the car till that is done.

robert

Anonymous

  • 1 Answer
  • Posted on Jul 18, 2009

SOURCE: Finding the PIN to pair My iphone with 2006 BMW 750i.

I have the same car. The dealership wanted to charge me $155 to go into the computer and give me the passkey.

One of the techs just told me how to find it myself:

Inside the trunk, on the left side behind the DVD player, there is a box that sits at a 45 degree angle. Right above that box, there is a box that is shaped like a VHS tape. Unscrew that box and on the other side you will see bluetooth PK: and your four digit number.

That saved me $155 dollars and now I can talk hands free through my car.

Anonymous

  • 2049 Answers
  • Posted on Sep 01, 2009

SOURCE: adding transmission fluid to 1992 BMW 525i.

On the driver side of the transmission pan there is a fill plug. The car must be in the air and level. With the car running fluid will run out of the plug hole when it is full. This is no fun without a lift.

Anonymous

  • 3 Answers
  • Posted on Jan 05, 2010

SOURCE: 1995 bmw 325I TRANSMISSION FLUID LEAKED OUT

Transmission oil pan sets very low, you probably bottomed out and cracked the pan. Do not drive. Replace pan, gasket and bolts.

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