MY11 D4 SDV6SE with 170,000 kms on the clock.
Just had same issue - sticky actuator.
Solenoid replaced, fault recurred, actuator rod freed up.
Questions;
1. Can I lubricate the actuator somehow? I was thinking a high temperature lithium or silicon type lubricant. The fact that the LR dealer freed up the actuator without removing the turbo from the car tells me its at least possible to reach it and free it up.
2. Should I be concerned that i will destroy a turbo any time soon and therefore risk the entire engine? I.e. do I bite the bullet and replace the sec. turbo before it becomes a complete engine replacement?
3. From the post below (seems very similar issue) - any chance of getting a pic?:
"NOT the primary turbo - sticky 2nd turbo isolation valve
All better now. The cause was a sticky secondary turbo isolation valve that was still stuck open until the rod on the vacuum chamber was touched. After going for a short run to confirm the fix, the valve body was removed to reveal dirt jamming between the linkage plate and the housing. A good squirt with WD40 and its all clean until next time when I'll just do the squirting with the housing and hoses still in place.
The valve is located behind the right front guard behind the plastic cover at the very bottom front. With the vehicle at off-road height and wheels hard right, access was quite reasonable. I'll grab a pic before refitting the cover."
4. Is this common with higher mileage D4's or other TT engines?
Eric
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