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How to replace remote fob battery in Audi A3, A4, Q3, Q7, R8, TT

December 22, 2017 in Audi A3, Audi A3 8P (2003 to 2013), Audi A3 8V (2012 to 2018), Audi A4, Audi A4 B7 (2004 to 2008), Audi A6, Audi Q3, Audi Q7, Audi R8, Audi TT by admin

This tutorial explains how to replace the key fob battery in Audi A3 8P, 8V (2003 – 2018), Audi A4 B7 (2004 – 2009), Audi A6 C6 (2004 – 2011), Audi Q3 8U (2011 – 2018), Audi Q7 1st. Gen. 4L (2005 – 2015), Audi R8 I (2005 – 2015), Audi TT 8J (2006 – 2015) with key fob pictured below.

LED in the remote control key (arrow in image on right side)

– If you press a button quickly, the LED blinks once.
– If you press a button longer (convenience opening), the LED blinks several times.
– If the LED does not blink, the remote control key battery is dead. The message “Please change key battery” can also appear in the instrument cluster display. Replace the battery.


To replace remote fob battery you’ll need:

– new CR2032 3v battery (one battery)

 

In order to replace it, follow the steps:

Step 1: Press the release button (red arrow).

Step 2: Pry apart the base (A) and the cover (B) carefully with a coin. Remove the cover (arrow).

Step 3: Re-install battery. Slide the battery holder carefully into th e remote
control key. Insert the mechanical key.

Battery orientation is with the (+) side down in relation to the cover.

The instructions in this tutorial will work in the following model years:
– Audi A3 8P, 8V 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 and 2018
– Audi A4 B7 2004, 2005, 2006, 2007, 2008 and 2009
– Audi A6 C6 2004, 2005, 2006, 2007, 2008, 2009, 2010 and 2011
– Audi Q3 8U 2011, 2012, 2013, 2014, 2015, 2016 and 2017
– Audi Q7 1st. Gen. 4L 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 and 2015
– Audi R8 I 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 and 2015
– Audi TT 8J 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 and 2015

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2014 to 2017 Audi Q3 8U – Fuse Box Location and Fuses List

December 17, 2017 in Audi Q3 by admin

The Audi Q3 8U (2014 – 2017) have 2 fuse boxes locations. One on storage compartment under the steering wheel and another one in engine compartment – Scroll down to see how to access them and the fuses list.

1- Fuse box on storage compartment under the steering wheel

To access the fuse box located on the driver’s side, open storage compartment under the steering wheel and press the left and right retainers inward and fold the compartment all the way down.

The fuse number is stamped into the plastic below or above each fuse.

Fuses list – Storage compartment under the steering wheel

Description
1 LED headlight (left)
2 LED headlight (right)
3 LED headlight (left)
4 LED headlight (right)
5
6
7 Steering lock
8 Convenience access
9 Airbag control module, AIRBAG OFF indicator light
10
11
12 Transmission control module
13 Air quality sensor for climate control system, heated window washer nozzles,  button, reverse light button,
14 Engine control module, transmission control module, quattro control
module, brake lights, electromechanical steering, Gateway control
module, trailer hitch control module, ESC control module, light switch,
damping control module
15 Headlight range control module, instrument illumination, headlights (left, right), diagnostic connector, headlight range control module, crankcase housing heater, air flow sensor, socket relay, DC/DC converter
16 Parking system
17 Parking system rearview camera
18 TV tuner
19 Engine starter control, DC/DC converter
20 ESC control module, climate/heating control, special functions interface
21 Selector mechanism power supply
22 Interior monitoring
23 button, front interior lighting buttons, diagnostic connector, light switch, light/ rain sensor, humidity sensor
24
25 Headlight power supply
26 Rear window wiper
27 Starter system
28 Infotainment
29 Supply for the parking system rearview camera and TV tuner
30 Infotainment
31 Infotainment
32 Instrument cluster
33 Automatic dimming rearview mirror
34
35
36 Cigarette lighter, cockpit/luggage compartment socket
37 Cockpit/rear socket
38 Transmission control module
39
40 Trailer hitch control module
41 Trailer hitch control module
42 Trailer hitch control module
43
44 Rear window defogger
45 Electromechanical parking brake control module
46 Trailer hitch control module
47 quattro control module
48 Automatic luggage compartment lid control module
49
50 Fan
51 Electromechanical parking brake control module
52 BCM
53 Front seat heating
54 Panorama roof
55 Sun shade on the panorama roof
56 Adaptive dampers control module

 2- Fuse box in the engine compartment

To access the fuse box located in the engine compartment, you must slide both sliding retainers at the left and right forward and remove the fuse panel cover.

The fuse number is stamped into the plastic below or above each fuse.

Fuses list – Engine Compartment

Power seat adjustment

 № Description
1 Transmission supply
2 ESC
3 Horn
4 DC/DC converter
5 BCM, battery data module
6 BCM (right)
7 Washer fluid pump
8 BCM (left)
9 Seat adjustment lumbar support
10 Heat oxygen sensor
11 Steering column lever, multifunction steering wheel controls
12 Cell phone adapter
13 Engine control module
14 Engine control module
15 Gateway
16 Heated oxygen sensor, fuel pump, engine components
17 Engine components
18 Fuel pump control module
19 Sound amplifier, DC/DC converter
20 Clutch pedal sensor, brake light sensor
21
22 Windshield wipers
23 Water circulation pump, auxiliary heater
24 Ignition coils
25 Driver’s door control module (central locking, window regulators)
26 Front passenger’s door control module (central locking, window regulators)
27 Terminal 15 supply
28
29 Power seat adjustment
30 ESC

The instructions in this tutorial will work in the following model years:

2014, 2015, 2016 and 2017 – Audi Q3 8U, Petrol (1.4 and 2.0 TFSI), Q3 RS 2.5 TFSI and Diesel (2.0 TDI and 2.0 TDI Quattro) Engines.