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SMG - Service Functions Performed After Drivetrain Repairs (23 08 06)

Publication date: 2007-01-11
Reference number: 23 08 06

SMG - SERVICE FUNCTIONS PERFORMED AFTER DRIVETRAIN REPAIRS

SMG - SERVICE FUNCTIONS PERFORMED AFTER DRIVETRAIN REPAIRS

TECHNICAL SERVICE BULLETIN

Reference Number(s): SI B 23 08 06, Date of Issue:  January 11, 2007
BMW: All with SMG transmission
GROUP: Manual Transmission

SUBJECT

SMG - Service Functions Performed after Drivetrain Repairs

SITUATION

Whenever certain drivetrain related repairs are made to vehicles with a SMG transmission, there are various Service Function / test plans which must be carried out for proper operation. These Service Functions only need to be performed after a particular repair, or if directed in a diagnosis test plan based on a stored fault code.

Always refer to the TIS repair instructions, diagnostic test plans, or the SMG service function notes in TIS - summarized below, as to which Service Function(s) must be carried out.

NOTE: The service functions must be carried out in the relevant order!
SERVICE FUNCTIONS

Repair performed Service Function(s) to be performed
Reprogramming of SMG module only None 
Replacement of SMG module
  1. Teach in clutch valve characteristics
  2. Adapt complete transmission
  3. Teach in clutch slip point
  4. Teach in offset on longitudinal - acceleration sensor
Before working on the hydraulic system, if the system:
  1. Is to be opened
  2. Is filled with hydraulic fluid - depressurization of hydraulic system
  1. Reduce hydraulic pressure
After working on the hydraulic system, if the system was opened
  1. Bleed actuator block
  2. Bleed clutch slave cylinder and hydraulic lines
After the removal and re-installation of:
  • engine
  • transmission
  • clutch

"No replacement parts installed"
  1. Teach in clutch characteristic values
  2. Adapt transmission
  3. Teach in clutch slip point
Replacement of transmission
or
Replacement of engine
or
Replacement of hydraulic unit with actuator block
NOTE: perform points 1 and 2 only if the hydraulic system has been opened

  1. Bleed actuator block
  2. Bleed clutch slave cylinder and hydraulic lines
  3. Teach in clutch characteristic values
  4. Adapt transmission
  5. Teach in clutch slip point
Replacement of clutch
NOTE: perform points 1 and 2 only if the hydraulic system has been opened

  1. Bleed actuator block
  2. Teach in clutch characteristic values
  3. Teach in clutch slip point
  4. Reset clutch curve (automatically carried out by BMW diagnostic system after successful teach in of points 2 and 3.
Replacing individual clutch parts:
  • release lever
  • ball pin
  • release bearing
  1. Teach in clutch characteristic values
  2. Teach in clutch slip point
  3. Reset clutch curve (automatically carried out by BMW diagnostic system after successful teach in of points 1 and 2.
Replacing clutch slave cylinder with PLCD sensor
  1. Bleed actuator block
  2. Bleed clutch slave cylinder and hydraulic lines
  3. Teach in clutch characteristic values
  4. Teach in clutch slip point
  5. Reset clutch curve (automatically carried out by BMW diagnostic system after successful teach in of points 3 and 4.
Replacing longitudinal-acceleration sensor
  1. Teach in offset on longitudinal-acceleration sensor

WARRANTY INFORMATION

Information only.

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