Audi Resource - Steering Wheel

Coding the control unit

	The code is composed as follows:
0 X X X X X X :	Blank
0 X X X X X :	Left-hand drive without fingerprint/without steering wheel heating or left-hand drive with fingerprint/without steering wheel heating
1 X X X X X :	Right-hand drive without fingerprint/without steering wheel heating or right-hand drive with fingerprint/without steering wheel heating
2 X X X X X :	Left-hand drive with fingerprint/with steering wheel heating
3 X X X X X :	Right-hand drive with fingerprint/with steering wheel heating
0 X X X X :	Without electrical steering column adjustment and/or with manual steering column adjustment, without lane keeping assistant
1 X X X X :	With electric steering column adjustment, without lane keeping assistant
2 X X X X :	Without electrical steering column adjustment and/or with manual steering column adjustment, with lane keeping assistant
3 X X X X :	With electric steering column adjustment, with lane keeping assistant
0 0 X X :	Standard steering wheel (no multi-function, no Tiptronic, not heated)
1 1 X X :	Sports steering wheel with Tiptronic
2 0 X X :	3-/4-spoke multi-function steering wheel (no Tiptronic on steering wheel, not heated)
2 1 X X :	3-/4-spoke multi-function steering wheel with Tiptronic (not heated)
2 2 X X :	3-/4-spoke multi-function steering wheel, heated (no Tiptronic)
2 3 X X :	3-/4-spoke multi-function steering wheel, heated, with Tiptronic
0 X:	No on-board computer, no CCS, no ACC
1 X:	On-board computer, no CCS, no ACC
2 X:	With CCS, no on-board computer
3 X:	With ACC, no on-board computer
4 X:	On-board computer, CCS
5 X:	On-board computer, ACC
1 :	Saloon
2 :	Avant* (rear window wiper)

Abbreviations:

CCS: Cruise control

ACC: Adaptive Cruise Control

*Not currently implemented

Coding example: 0012251

Left-hand drive without fingerprint/without steering wheel heating or left-hand drive with fingerprint/without steering wheel heating, with electric steering column adjustment, 3-/4-spoke multi-function steering wheel, heated (no Tiptronic), with on-board computer and ACC, Saloon

Reading measured value block

The following measured values are displayed:

Input signals:

Measured value block 001:

Turn signal (unpressed/left/right)Headlight flash (unpressed/pressed)Main beam (unpressed/pressed)Wipe-front (unpressed/int./stage 1*/stage 2)

*Also indicated in single wipe mode

Measured value block 002:

Intermittent* (stage 1/stage 2/stage 3/stage 4)

Wash-front (unpressed/pressed)

Wipe-rear (n. fitted**/unpressed/pressed)

*Potentiometer setting on windscreen wiper switch -E22

**In Saloon

Measured value block 003:

Horn (unpressed/pressed)

On-board computer (n.fitted/unpressed/Reset button*/Up button/Down button)

Steering column adjustment (n. fitted/unpressed/forward/back/raise/lower)

On/Off switch for Easy Entry (n. fitted/off/on)

*Press reset button

Measured value block 004:

CCS/ACC main switch (off/on)

CCS/ACC set (unpressed/pressed)

CCS/ACC (unpressed/accelerate/decelerate/stored Off/Resume)

ACC interval adjustment (n. fitted/unpressed/interval+/interval-)

Measured value block 005:

MFS communication (n.fitted/OK/n.OK)

MFS electronics software version (without readout/version number)

MFS electronics hardware version (without readout/version number)

Fault MFS recognised (without readout/Yes/No)

Measured value block 006:

MF button left (n. fitted/unpressed/pressed)

MF button right (n. fitted/unpressed/pressed)

Knurled button left (n. fitted/unpressed/pressed)

Knurled button right (n. fitted/unpressed/pressed)

Measured value block 007:

Knurled wheel left (n.fitted/unpressed/upward memory scan slow/downward memory scan slow)

Knurled wheel right (n. fitted/unpressed/slow volume up/volume down)

Touch Down (n. fitted/unpressed/pressed)

Touch Up (n. fitted/unpressed/pressed)

Measured value block 008:

Steering wheel heater (n. fitted/off/on) -Output signal-

Sensor (n. fitted/temperature in degrees Celsius) -Input signal-

Current at output (n.fitted/latest current for steering wheel heater in Ampere) -Output signal-

Seat heating driver side (off/stage) -Input signal-

On vehicles with steering wheel heater button -E522

Measured value block 008:

Steering wheel heater (n. fitted/off/on) -Output signal-

Sensor (n. fitted/temperature in degrees Celsius) -Input signal-

Current at output (n.fitted/latest current for steering wheel heater in Ampere) -Output signal-

Steering wheel heater button (unpressed/pressed) -Input signal-

Measured value block 009:

Dimming (dimming value*) -Input signal-

Calculated dimming value "discrete" (dimming value* discrete**) -Output signal-

Calculated dimming value "LIN" (dimming value* LIN) -Output signal-

Vacant

*Dimming value in %

**In the new Audi A8 not relevant, as multi-function steering wheel (MFS) standard (LIN always active)

Measured value block 010:

Input signal for steering wheel vibration motor (no/yes) -Input signal-

Steering wheel vibration motor (off/on) -Output signal-

Fault in steering wheel vibration motor (no/yes) -Output signal-

Lane keeping assistant button (unpressed/pressed) -Input signal-

Measured value block 011:

*Status of steering wheel heater for keys #1 to #4 (0/1) -Input signal-

Vacant

*The personalisation of the respective ignition key (1 to 4) is applied the next time the key is inserted.

0 = No personalisation for steering wheel heater

1 = Steering wheel heater personalised

Expanded control unit identification:

Measured value block 080*:

Manufacturer works number and identifier

Date of manufacture

Manufacturer modification status and test status number

Manufacturer serial number

*The values are displayed in series

Measured value block 081*:

Chassis number

Module number or serial number

Type test number

Vacant

*The values are displayed in series