Golf/Jetta (MK5), EOS (175), A3 (8P) and others
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.
Remove the 13mm mounting nuts (arrows).
Wiggle the whiper arm to loosen and remove.
Pull off seal of pelnum chamber (4) with your hands on the entire length of the facing wall (2) of the plenum chamber.
Pull out plenum chamber cover (1) starting at right carfully upward from snap connection (5)
Cut into the bolts between the (dotted lines and arrows) and then remove with a falt head screwdriver.
Protect the windshield and surrounding area from sparks when cutting the bolts.
Insert a screwdriver (a) between the protective housing and retaining plate (arrows)
Pry the protective housing upward using the screwdriver (a) and pull it off sideways from the retaining plate (arrow).
Disconnect the front connector (1).
Pry up (wards front of vehicle) the locking mechanism (2) slightly.
Slide the ECU out of the retainer (arrow).
Disconnect the rear connector from the ECU.
Connect and lock the rear connector into the ECU.
Slide the ECU into the retaining plate.
Connect and lock the front connector to the ECU.
Slide the protective housing on to the retaining plate.
Tighten the sheer bolts (1) until the head sheers off
Spray binding profile (5) with soapy solution so the plenum chamber cover (1) can be pressed in easily.
Place plenum chamber cover (1) onto snap connection (5) and engage it with snap connection (5) starting from center using light pressure and no tools.
Install plenum chamber seal (4).
Reinstall whiper arms and tighten nuts.