will shift into any gear but it wont engage.

My 2005 Passat TDI will shift into any gear but it wont engage. I had to put new seals into transmission and I put new seal around oil pan because it was only starting out in 2nd gear I had no 1st gear slight leak , I should add I had driven it around just a bit while it was like this just a slight leak starting in 2nd gear .Well that slight leak turned into a gushing leak so I took transmission off engine and replaced ring or seal on the inside I put it all back togather to tork specs hooked all connectors back togather put the right transmissions fluid in and happily found no leaks while running ,however I put it gear and it will engage into any gear but will not engage into a driveable gear including reverse. Can anyone please please tell me what it could be I would be extremely grateful indeed .Thank you for your time………Mike.M in Idaho.

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I just want to say thank you again and I really appreciate any help I'm hoping it's not some major problem again thank you for the help .

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Let's start with the basics - Trans fluid level is full? What color is the fluid? Do you have a scan tool available so you can check the computer for fault codes?

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If the fluid you removed was discolored it may suggest you burnt up the gear pads and they are unable to grab to actually move the car. Sometimes a burnt smell can come from the fluid or the transmission suggesting the same.

B5 TDI Passats have a bad transmission and they typically fail early. I would recommend getting another used one but a used one could find the same fate OR if you are wanting the car to last for a long time you could upgrade to a manual transmission albeit, this does require more research and more work. There are YouTube videos on this exact model performing this swap to help.

Good Luck.

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