Tiguan (5N) 2.0 TSI MED17 ECU Removal Guide
Precautions and notes before removing the ECU:
The ECU (Engine Control Unit) is a computer that controls your engine. You must have the ECU installed for your vehicle to function. Before removing the ECU, make sure your vehicle is in a safe location where it may sit, unattended, while the ECU is sent back and forth to APR. Be sure to leave the vehicle in park, or in gear, with the emergency brake on. Turn off the vehicle before proceeding and remove the key from the ignition. Disconnect the battery and do not reconnect the battery until the ECU is fully reinstalled. Also do not put the key into the ignition or attempt to start the car until the ECU's back in the car. Make sure you discharge any static electricity before handling the ECU and care when handling the ECU. Make sure the ECU is not subjected to extreme heat or cold, magnets, electrical shock, physical shock or liquids. Also do not attempt to open the ECU. When fully removed from the vehicle, be sure to package the ECU in a safe container for shipping with adequate packaging material. A static and or waterproof bag is ideal.
Alwasy remember to include your orderform and double check your contact information for accuracy!
Please note APR includes these instructions as a guide and is not liable for any mistakes made during the removal or installation of the ECU. Use common sense when handling the ECU and call APR if you have any questions. We are accessible at +1 (334) 502-5181. Also, if you are uncomfortable with removing your own ECU, APR's extensive dealer network can preform the work for you. Please visit www.goapr.com/dealer/ for a list of dealers near you. Thank you!
Pry off covers (arrows) using a screwdriver.
Loosen the the mounting nuts (arrows) and then remove them.
Wiggle the whipper arm to loosen and remove it.
Pull off seal (5) on the entire length of the plenum chamber cover (1) and (2).
Remove the mounting clamps (6) from the plenum chamber cover.
Pull out plenum chamber covers (1) and (2) starting at the center carefully upward from windshield binding profile (3). Always begin with plenum chamber cover lying on top.
Remove the bolts (1).
Cover the plenum chamber with a clean cloth so it does not get scratched.
Raise the ECU with mounting frame slightly.
Release the ECU in the (direction of the arrow) and pull it out slightly.
Bend the raised ends (1) of the locking bracket outward.
Remove the sheer bolts (2) with locking pnliers, or by cutting a slot in the bolts and using a screwdriver, and remove the locking bracket.
If slotting the sheer bolts, protect the windshield and surrounding area from sparks.
Slide the connector catches (1) on the ECU outward and remove both connectors.
Remove the ECU
Slide the ECU (1) in the (direction of the arrow) into the mounting rame untill it engages.
Tighten the mounting frame.
Connect the connector to the ECU and slide the catches (1) inward.
Install the locking bracket and tighten new sheer bolts evenly untill the bolt heads sheer off.
Spray the windshield binding profile (3) with a soap solution to make it easier to install the plenum chamber covers (1) and (2).
Plase the Plenum chamber covers (1) and (2) onto binding profile (3) and clip it into binding profile starting from the center using light pressure. Begin with plenum chamber cover lying on bottom.
Secure the plenum chamber cover with the securing clamps (6).
Install seal (5) on to plenum chamber cover and windshield wipers.
Reinstall whiper arms and tighten nuts.