Transmission (Red) or Power Transfer Unit (PTU) (Brown) Fluid Leaks at Axle Area on Ford Flex

A leaking axle shaft seal and / or PTU cover seal can cause transmission (red) or Power Transfer Unit (PTU) (brown) fluid leaks at the axle area. The axle shaft seal and / or PTU cover seal may be leaking and should be replaced as required.

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Average mileage: 78,364 (35,800–129,365)
Drive Trains affected: 2WD, 4WD, AWD, FWD
3 model years affected: 2009, 2010, 2011
21 people reported this problem
12 people shared problem details
2011 Ford Flex- AWD78,000
PTO started leaking out of the vent, notcied some drops on the floor. Had the fluid changed, but unfortunately is too late. Time for a new PTO. Recommend changing fluid every 25k or so.
2010 Ford Flex- 2WD88,000
Right front trans axel leak
2009 Ford Flex- AWD
PTU seal has been replaced by dealer 4 times and now leaks more than ever. Originally took Flex to dealer for unrelated problem and was informed seal was leaking. Leak was so minor I had never noticed it. Car has never left a drop on the garage floor. After first repair and every one afterwards, the leak has been terrible and now it's parked.
2010 Ford Flex- AWD99,200
Noticed some type of dark fluid in the drive. I took it to my mechanic and he determined it was the PTU leaking. The unit was about half full of fluid. He was honest and said it wasn't something he could fix. I took it to a transmission specialist. The PTU needs a full rebuild. $1200.
2010 Ford Flex- AWD88,000
Leaking fluid out of front axle vent.
2009 Ford Flex- AWD129,365
Heard a grinding sound. Took the car into Monarch Ford (Exeter, CA) they said the problem was with front axle struts, sound did not go away. Then then reshaped the right rear rotor. Sound did not go away. Then my tenant noticed an oil spot after we left for the weekly 250 mile trip to the ranch. We then got back from the ranch we discovered that the vehicle was leaking more. Called Monarch Ford again and they insisted that the front axle lube was thick and would not drip. This is in direct conflict with your website and now they are checking your website.
2011 Ford Flex- AWD110,000
Had the seal replace less than a year ago. It's leaking again, and now the dealer says the seals are fine; but it needs a new PTU to the tune of $1,700.00. Frustrating that such a great car, has such crappy dealer service.
2009 Ford Flex- AWD57,000
Power Transfer Unit Leaked. It seems that either the leak or some other event caused the internal casing to burn up. now the unit has to be replaced at a cost of ~$1400
2010 Ford Flex- AWD74,000
brown fluid drops on garage floor. Dealer said they must R& R PTU and reseal for $820.70 Hoping I can find it done cheaper somewhere else.
2009 Ford Flex- AWD89,000
We are now on our 4th seal and it's now has gone bad. Dealer is saying we need a new PTU ... for a seal issue?
2009 Ford Flex- AWD58,095
This is the second leak in 5000 miles (June 2012).
2009 Ford Flex- 4WD35,800
Transmission fluid leaked at first. ( Drive shaft seals bad) Now have leak in rear differential.
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