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    1. · Registered
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      The fans are an easy job. Basically, you remove the belly pan, disconnect the connector, remove four T30 screws and the assembly comes out the bottom. The FCP Euro suggestion is good. I would take care of that ASAP as overheating is a sure way to destroy an engine.

      The turbo failure is also unfortunately common. It is almost always the result of a worn waste gate actuator linkage, which allow exhaust gasses to bypass the turbine wheel. This sets a P0299 underboost fault and the resultant reduction in performance. This is not a catastrophic failure and can wait. I would highly recommend getting the Borg Warner replacement rather than the OEM IHI. While it won't save you money, it will likely last longer than the original IHI turbo, which is infamous for the waste gate problem. Some consider the Borg Warner to be the turbo VW should have put on originally. They were the traditional turbo supplier to VW/Audi and didn't have issues like the OE IHIs do. The job takes about six hours, and is not the easiest thing, with a few tough to get at bolts which takes most of the time. Like the 6mm "drain plug" bolt that is one of the bolts that holds the upper heat shield in place. I made a custom tool just for that bolt. It is possible to do on jack stands, but it is easier on a lift.

      There are less expensive turbo options, but I would spend more time and save up for the Borg Warner turbo than to get a cheaper ebay turbo, etc. With the amount of time it takes to do the job, you really don't want to have issues with it and have to do it again.
       
    2. · Registered
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      Discussion Starter · #4 ·
      The first thing I would do is verify that what they told you is the actual problem. Not that all dealerships lie and are always wrong, but they don’t have a reputation of being honest or accurate in their diagnosis.
      As for parts and cost.
      You can get a genuine VW fan here: Audi VW Cooling Fan Assembly - Genuine Audi VW 1K0959455ET
      That’s way less than $3k and there are much cheaper options on their site if you want to save another $200.
      The fan is definitely a DIY job. The turbo is too, but requires more work and expense to change.
      Usually, the wastegate is what fails on these engines, but I don’t think turbo failure is unheard of.
      Thank you for
      The fans are an easy job. Basically, you remove the belly pan, disconnect the connector, remove four T30 screws and the assembly comes out the bottom. The FCP Euro suggestion is good. I would take care of that ASAP as overheating is a sure way to destroy an engine.

      The turbo failure is also unfortunately common. It is almost always the result of a worn waste gate actuator linkage, which allow exhaust gasses to bypass the turbine wheel. This sets a P0299 underboost fault and the resultant reduction in performance. This is not a catastrophic failure and can wait. I would highly recommend getting the Borg Warner replacement rather than the OEM IHI. While it won't save you money, it will likely last longer than the original IHI turbo, which is infamous for the waste gate problem. Some consider the Borg Warner to be the turbo VW should have put on originally. They were the traditional turbo supplier to VW/Audi and didn't have issues like the OE IHIs do. The job takes about six hours, and is not the easiest thing, with a few tough to get at bolts which takes most of the time. Like the 6mm "drain plug" bolt that is one of the bolts that holds the upper heat shield in place. I made a custom tool just for that bolt. It is possible to do on jack stands, but it is easier on a lift.

      There are less expensive turbo options, but I would spend more time and save up for the Borg Warner turbo than to get a cheaper ebay turbo, etc. With the amount of time it takes to do the job, you really don't want to have issues with it and have to do it again.
      Thank you for the detailed response. I really appreciate it.

      I talked to another mechanic yesterday that explained the possible wastegate problem. He wants to take a look at it. He explained that the wastegate is a very common problem and he thinks he can possibly repair the wastegate and not need to replace the turbo. I hope he is correct. With the exception of the cooling fans not working properly the Tiguan is running okay and no check engine lights are on therefore we did not realize there was a problem with the turbo was underperforming.

      Thanks again.
       
    3. · Registered
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      Discussion Starter · #5 ·
      The fans are an easy job. Basically, you remove the belly pan, disconnect the connector, remove four T30 screws and the assembly comes out the bottom. The FCP Euro suggestion is good. I would take care of that ASAP as overheating is a sure way to destroy an engine.

      The turbo failure is also unfortunately common. It is almost always the result of a worn waste gate actuator linkage, which allow exhaust gasses to bypass the turbine wheel. This sets a P0299 underboost fault and the resultant reduction in performance. This is not a catastrophic failure and can wait. I would highly recommend getting the Borg Warner replacement rather than the OEM IHI. While it won't save you money, it will likely last longer than the original IHI turbo, which is infamous for the waste gate problem. Some consider the Borg Warner to be the turbo VW should have put on originally. They were the traditional turbo supplier to VW/Audi and didn't have issues like the OE IHIs do. The job takes about six hours, and is not the easiest thing, with a few tough to get at bolts which takes most of the time. Like the 6mm "drain plug" bolt that is one of the bolts that holds the upper heat shield in place. I made a custom tool just for that bolt. It is possible to do on jack stands, but it is easier on a lift.

      There are less expensive turbo options, but I would spend more time and save up for the Borg Warner turbo than to get a cheaper ebay turbo, etc. With the amount of time it takes to do the job, you really don't want to have issues with it and have to do it again.
      Do you have a recommendation for the fans?
       
    4. · Registered
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      4,293 Posts
      The fans are an easy job. Basically, you remove the belly pan, disconnect the connector, remove four T30 screws and the assembly comes out the bottom. The FCP Euro suggestion is good. I would take care of that ASAP as overheating is a sure way to destroy an engine.

      The turbo failure is also unfortunately common. It is almost always the result of a worn waste gate actuator linkage, which allow exhaust gasses to bypass the turbine wheel. This sets a P0299 underboost fault and the resultant reduction in performance. This is not a catastrophic failure and can wait. I would highly recommend getting the Borg Warner replacement rather than the OEM IHI. While it won't save you money, it will likely last longer than the original IHI turbo, which is infamous for the waste gate problem. Some consider the Borg Warner to be the turbo VW should have put on originally. They were the traditional turbo supplier to VW/Audi and didn't have issues like the OE IHIs do. The job takes about six hours, and is not the easiest thing, with a few tough to get at bolts which takes most of the time. Like the 6mm "drain plug" bolt that is one of the bolts that holds the upper heat shield in place. I made a custom tool just for that bolt. It is possible to do on jack stands, but it is easier on a lift.

      There are less expensive turbo options, but I would spend more time and save up for the Borg Warner turbo than to get a cheaper ebay turbo, etc. With the amount of time it takes to do the job, you really don't want to have issues with it and have to do it again.
      This summarized my response - exactly.

      Oh, as for the fans I have actually gone cheap on these a couple of times. What actually fails is the main fan as it has the controller for both fans built in. The secondary fan itself almost never fails in my experience. So, I bought the main fan/controller assembly replacement that comes without the frame or secondary fan. I can't say I would recommend doing this, but if you are OK with a bit of a risk, it worked for me. I did notice that the controllers on the really cheap ones are not very rugged and likely won't last long.
      The fan controllers going bad as something that has plagued Volkswagen for decades
       
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