Porshe 911 (997). Manual - part 926

Removing control unit for steering wheel electronics

Note

The control unit for steering wheel electronics is bolted to the steering-column switch.
Before the ground strap of the battery is disconnected, the data in the control unit for steering wheel
electronics must be read out using the Porsche System Tester.

Position of markings

Note

Ensure that the arrow -A- of the rotor is positioned between the markings -B- of the arrows -C- of the
airbag contact unit and that the latch -D- is engaged.

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Removing contact unit

1. Remove contact unit.

1.1. Carefully lift up the three retaining tabs and remove airbag contact

unit.

Diagnostic system: reading out fault memory and activating systems

Removing control unit for steering wheel electronics

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Unscrewing fastening screws

2. Unscrew fastening screws for steering wheel electronics control unit.

2.1. Unscrew the five fastening screws.

Pushing out the line holder

3. Push out the line holder.

3.1. Push line holder down and out of the steering-column

switch.

Removing control unit for steering wheel electronics

4. Remove control unit for steering wheel

electronics.

4.1. Turn steering column switch round and remove control unit for steering wheel electronics.

Installing control unit for steering wheel electronics

Installing control unit for steering wheel electronics

WARNING

Risk of damaging airbag contact unit.

If the airbag contact unit has been adjusted, proceed in accordance with the following work
instruction:

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Diagnostic system: reading out fault memory and activating systems

 Installing control unit for steering wheel electronics

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→ To position the airbag contact unit in the central position, press the locking element and turn the rotor

carefully to the left as far as it will go.

→ Then turn the rotor carefully to the right, approx. 3.5 to 3.75 revolutions, until the band printed on one side

is visible in the window.

Mounting control unit for steering wheel electronics

1. Install control unit for steering wheel electronics.

1.1. Position control unit for steering wheel electronics on the steering-column

switch.

Pushing on line holder

2. Push on line holder.

2.1. Push line holder onto steering-column

switch.

Screwing in the fastening screws

3. Unscrew fastening screws for steering wheel electronics control unit

Diagnostic system: reading out fault memory and activating systems

Installing control unit for steering wheel electronics

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3.1. Turn the steering column switch round and screw in the five fastening

screws.

Engaging contact unit

4. Install contact unit.

4.1. Position airbag contact unit and press onto the steering column switch until the three tabs are felt to

engage.

Subsequent work

Subsequent work

1. Install steering column switch. → 945019 Removing and installing steering column switch - section

on "Installing"

2. Install steering column trim. → 481319 23 Removing and installing trim - section on

"Installing"

3. Install steering wheel. → 481019 Removing and installing steering wheel - section on

"Installing"

4. Install driver's airbag unit. → 695819 Removing and installing driver's airbag unit - section on

"Installing"

5. Read data into the control unit for steering wheel electronics.

6. Calibrating steering angle sensor

Reading data out of and writing data into the control unit for
steering wheel electronics.

Reading and printing values

Note

If reading out the data is not possible, the new control unit for steering wheel electronics must be

• 

Diagnostic system: reading out fault memory and activating systems

 Subsequent work

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