Check the PR tag where the spare is in the wheel well. If you have the option code 1N3 listed on that sheet then you have servotronic. There is also a relay that you can see behind the fuse panel cover; if you have the relay "640" then you have servotronic.
As far as draining goes, remove the belly pan and drain the fluid via the power steering cooler. Both hoses connected are for the return line from the power steering unit. One of them goes from the rack, and the other to the reservoir.
rack & pinion ------> power steering return line ------> power steering cooler ------> power steering return line ------> reservoir ------> power steering supply line ------> power steering pump ------> supply line ------> rack & pinion..
One of the lines that is connected to the power steering cooler pipe goes directly to the rack, you can try to draw a vacuum & pull more fluid out, or you can more the steering wheel from lock to lock and that will push more fluid out. In terms of mess, just have a rag or two where the power steering lines connect to the rack and pinion. If you follow the above method, barely any fluid comes out when you disconnect the banjo bolts.
Once you have the rack in through the access hole (it greatly helps to have two people putting it back in), secure the rack on ONLY the bolt which is on the passenger side. This will allow the rack to swing back and forth and pivot. Basically what you want to do is move the rack on the drivers side towards the front of the car. This will allow you to tighten the banjo bolts WITH EASE, by method of some sockets and extensions. That way you can be sure to apply the proper torque and have no leaks later on. Once that is done, swing the rack back into place and secure it with the other two bolts.
Once everything is installed & lines are reconnected, top off the fluid to max mark. Start the car for no more than two seconds from the point of cranking, and keep topping off the fluid until it no longer goes down. With the car off, move the wheels from lock to lock 10 times. Check fluid level. Start the car, and move the wheels from lock to lock 10 times again. You're Done! This whole repair & bleeding procedure is done with the front wheels in the air.
Super easy and you'll feel more confident working on your vehicle if you plan on doing this yourself. Scale of difficulty, 4/10. I'd say the hardest part is getting the rack in; I did it by myself, but I recommend someone on the other side of the car to guide it in place.
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