2015 VOLKSWAGEN GOLF GTI ECU

Changing the vehicle's suspension system can change the way that the airbag system works in a crash. For example, using tire-rim combinations not approved by Volkswagen, lowering the vehicle, changing the stiffness of the suspension, including the springs, suspension struts, shock absorbers etc. can change the forces that are measured by the airbag sensors and sent to the electronic control unit. Some suspension changes can, for example, increase the force levels measured by the airbag sensors and sent to the electronic control unit and make the airbag system deploy in crashes in which it would not deploy if the changes had not been made. Other kinds of changes may reduce the force levels measured by the sensors and prevent the airbag from deploying when it should.
Never install leather upholstery on a vehicle that originally had cloth upholstery. Never install cloth upholstery on a vehicle that originally had leather upholstery. The capacitive passenger detection system for the Advanced Airbag system will not work properly if different upholstery is installed on the passenger seat than the upholstery originally installed on the vehicle when it was originally manufactured.
WARNING
Changing the vehicle's suspension including use of unapproved tire-rim combinations can change airbag performance and increase the risk of serious personal injury in a crash.
x Never install suspension components that do not have the same performance characteristics as the components originally installed on your vehicle.
x Never use tire-rim combinations that have not been approved by Volkswagen.
WARNING
Leaving the optional safety belt extender attached to the safety belt buckle on the front passenger seat when the safety belt is not being used will prevent the Advanced Airbag System from working properly and can increase the risk of serious personal injury in a collision.
x Leaving the extender attached to the safety belt buckle when the front seat is occupied and the safety belt is not being used will signal to the airbag control unit that the front passenger seat is occupied and that the safety belt is being used. The electronic control unit for the airbag system will then receive incorrect information that will
– cause the safety belt pretensioner to deploy unnecessarily in collisions and
– cause the front passenger airbag to deploy later in collisions in which the front airbag would otherwise be triggered earlier to help protect an unrestrained front seat passenger.
x Always remove the safety belt extender when it is not needed and stow it safely.
x Never use the safety belt extender to secure a child restraint.
WARNING
Items stored between the safety belt buckle and the center console can cause safety belt buckle to send the wrong information to the airbag control unit and prevent the Advanced Airbag System from working properly.
x Always make sure that nothing can interfere with the safety belt buckles and that they are not obstructed.

6. Have all passengers exit and go to a safe place, such as behind a guard rail.
7. Block the diagonally opposite wheel with chocks or other suitable things.
8. If towing a trailer: Unhitch the trailer from the vehicle and park the trailer properly.
9. If the luggage compartment is loaded: Remove the luggage.
10. Raise and secure the luggage compartment floor.
11. If applicable: Remove the subwoofer ⇒ Removing the subwoofer.
12. Unscrew the fastening screw with washer counterclockwise and remove.
13. Take the spare or compact spare wheel and the vehicle tool kit out of the luggage compartment.
14. Take off the wheel covers ⇒ Wheel trim.
WARNING
Disregarding the safety-related checklist may lead to accidents and serious personal injuries.
x Always review and follow the checklist. Follow accepted safety practices and use common sense.
Wheel bolts

Fig. 177 Changing a wheel: Loosening the wheel bolts.

The subwoofer, if equipped, is located under the luggage compartment floor and must be removed to access the spare wheel.
Removing the subwoofer
Follow these steps in the order listed:
1. Raise and secure the luggage compartment floor ⇒ Storage.
2. Unscrew the handwheel ⇒ fig. 180 (1) in a counterclockwise direction (arrow).
3. To release the connector, press and hold the center tab down with one hand (2).
4. With the other hand, grasp the connector on both sides, and carefully pull the connector out of the socket in the direction of the arrow (magnified view). Put the electric cable aside.
5. Remove the subwoofer carefully and place in a clean storage location.
Reinstalling the subwoofer
1. Reinstall the subwoofer carefully back into the recess. The tip of the arrow symbol “FRONT” on the subwoofer must point toward the front of the vehicle
2. Insert the connector (2) into the socket until it clicks into place.
3. Turn the handwheel (1) clockwise to secure the subwoofer.
4. Carefully lower the luggage compartment floor back into place.
Changing a wheel

Fig. 181 Changing a wheel: Remove previously loosened wheel bolts using the screwdriver handle.

WARNING
Improper replacement of burned out headlights and other light bulbs can cause serious personal injury.
x Stop! Always read and heed the WARNINGS before doing any work in the engine
compartment ⇒ Working in the engine compartment. The engine compartment of any motor vehicle is a potentially dangerous area, and work in this area can lead to serious personal injury.
x HID – High Intensity Discharge (Xenon) headlights get power from a high voltage source that can cause severe personal injury and even death if handled improperly.
x H7 bulbs and HID – High Intensity Discharge (Xenon) headlights are under high pressure and can explode if handled improperly.
x Always let a burned out light bulb cool down before replacing it.
x Never replace a light bulb unless you are familiar with all of the necessary procedures. In particular, never remove a headlight unless you know exactly how to carry out the job and have the correct tools and light bulbs.
x If you are uncertain about what to do, have the work performed by an authorized Volkswagen dealer, an authorized Volkswagen Service Facility, or another qualified workshop. Serious personal injury may result from improperly performed work.
x We strongly recommend that you always have HID – High Intensity Discharge (Xenon) headlights and H7 bulbs replaced by a qualified technician.
x Do not touch the glass of light bulbs with your bare hands. Fingerprints left on the bulb evaporate due to the heat when the bulb is switched on and cause the reflector to “cloud.”
x There are sharp edges on and around the headlight housing in the engine compartment and the rear light housing. Wear hand protection if you replace bulbs.
NOTICE
After replacing a headlight bulb or other light bulb, always make sure that the rubber covers or plastic caps have been properly and securely reinstalled to help prevent water from getting into the electrical connections and the headlight housing and damaging the electrical system.
LEDs cannot be replaced. Contact your authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance.
Indicator light

NOTICE
Always make sure the towing eye is screwed all the way into threaded hole so that it is secure. If not, it could be pulled out while your vehicle is being towed.
Driving tips while towing