Seat Fan: Service and Repair
WM 740919 Removing and installing suction fan for seat surface
Preliminary work
1. Disconnect the battery. -> 2706IN00 Work instructions after disconnecting the battery
2. Remove the front seat. -> 720119 Removing and installing front seat - section on "Removing" 720119 Removing and Installing Front Seat
3. Mount the front seat on the assembly fixture. -> 7201IN Mounting front seat on assembly fixture 7201IN Mounting front seat on assembly fixture
Information
Driver's side only:
4. Remove control unit for memory seat adjustment. -> 729319 Removing and installing control unit for memory seat adjustment - section on "Removing" 72931900 Removing and installing control unit for memory seat adjustment
Information
Only for vehicles with weight sensing AWS (USA) on the passenger's seat.
5. Remove control unit for AWS. -> 696819 Removing and installing AWS control unit - section on "Removing" 696819 Removing and installing AWS control unit
Removing suction fan for seat surface
Removing suction fan for seat surface (driver's side)
Installation position of suction fan for seat surface
1. Release connector socket -arrows a- and pull it out of the holder -arrow-.
Pulling off connector socket
2. Unscrew fastening screws -1 and 2-.
Unscrewing fastening screws for suction fan and holder
3. Remove holder for suction fan for seat surface -arrow- and swivel suction fan for seat surface forward until you can reach the plug connection.
4. Release plug connection -arrow A- and disconnect it -arrows B-.
Disconnecting plug connection on suction fan for seat surface
5. Turn suction fan for seat surface clockwise -arrow A- until the suction fan for the seat surface is released. Counter at the air duct while doing this.
Removing suction fan for seat surface
6. Remove suction fan for seat surface -arrow B-.
Removing suction fan for seat surface (passenger's side)
1. Release connector socket -arrows a- and pull it out of the holder -arrow-.
Pulling off connector socket
2. Unscrew fastening screws -1 and 2-.
Unscrewing fastening screws for suction fan and holder
3. Remove holder for suction fan for seat surface -arrow- and swivel suction fan for seat surface forward until you can reach the plug connection.
4. Release plug connection -arrow A- and disconnect it -arrows B-.
Disconnecting plug connection on suction fan for seat surface
5. Turn suction fan for seat surface clockwise -arrow A- until the suction fan for the seat surface is released. Counter at the air duct while doing this.
Removing suction fan for seat surface
6. Remove suction fan for seat surface -arrow B-.
Removing suction fan for seat surface (passenger's side)
1. Release connector socket -arrows a- and pull it out of the holder -arrow-.
Pulling off connector socket
2. Unscrew fastening screws -1 and 2-.
Unscrewing fastening screws for suction fan and holder
3. Remove holder for suction fan for seat surface -arrow- and swivel suction fan for seat surface forward until you can reach the plug connection.
4. Release plug connection -arrow A- and disconnect it -arrows B-.
Disconnecting plug connection on suction fan for seat surface
5. Turn suction fan for seat surface clockwise -arrow A- until the suction fan for the seat surface is released. Counter at the air duct while doing this.
Removing suction fan for seat surface
6. Remove suction fan for seat surface -arrow B-.
Installing suction fan for seat surface
Installing suction fan for seat surface (driver's side)
1. Check rubber mounting -1- on holder for suction fan for seat surface for damage and replace it if necessary.
Checking rubber mounting on holder for suction fan for seat ventilation
Information
Ensure that the suction fan is installed at the correct position!
Information
Ensure that the suction fan is installed at the correct position!
2. Insert suction fan for seat surface into the air duct -arrow A- , press it in and turn anti-clockwise -arrow B- until the suction fan for the seat surface is fully locked in the air duct.
Installing suction fan for seat surface
3. Push the plug connection together until it engages securely -arrows-.
Connecting plug connection on suction fan for seat surface
Information
Only for vehicles with memory seat adjustment.
Ensure that lines are routed correctly!
The wire harness from the seat adjustment switch to the memory control unit (black connector) must be routed between the suction fan for the seat surface and the suction fan holder arrow.
Information
Only for vehicles with memory seat adjustment.
Ensure that lines are routed correctly!
The wire harness from the seat adjustment switch to the memory control unit (black connector) must be routed between the suction fan for the seat surface and the suction fan holder arrow.
4. Move suction fan for seat surface together with the suction fan holder into installation position -arrow-.
Screwing in fastening screws on suction fan and holder
5. Tighten fastening screws -1 and 2-.
6. Slide connector socket onto the holder -arrow- until it clicks into place.
Attaching connector socket
Installing suction fan for seat surface (passenger's side)
1. Check rubber mounting -1- on holder for suction fan for seat surface for damage and replace it if necessary.
Checking rubber mounting on holder for suction fan for seat ventilation
Information
Ensure that the suction fan is installed at the correct position!
Information
Ensure that the suction fan is installed at the correct position!
2. Insert suction fan for seat surface into the air duct -arrow A- , press it in and turn anti-clockwise -arrow B- until the suction fan for the seat surface is fully locked in the air duct.
Installing suction fan for seat surface
3. Push plug connections together until they engages securely -arrows-.
Connecting plug connection on suction fan for seat surface
Information
Ensure that lines are routed correctly!
The wire harness must be routed between the suction fan for the seat surface and the suction fan holder arrow.
Information
Ensure that lines are routed correctly!
The wire harness must be routed between the suction fan for the seat surface and the suction fan holder arrow.
4. Move suction fan for seat surface together with the suction fan holder into installation position -arrow-.
Tightening fastening screws on suction fan and holder
5. Tighten fastening screws -1 and 2-.
6. Slide connector socket onto the holder -arrow- until it clicks into place.
Attaching connector socket
Installing suction fan for seat surface
Installing suction fan for seat surface (driver's side)
1. Check rubber mounting -1- on holder for suction fan for seat surface for damage and replace it if necessary.
Checking rubber mounting on holder for suction fan for seat ventilation
Information
Ensure that the suction fan is installed at the correct position!
Information
Ensure that the suction fan is installed at the correct position!
2. Insert suction fan for seat surface into the air duct -arrow A- , press it in and turn anti-clockwise -arrow B- until the suction fan for the seat surface is fully locked in the air duct.
Installing suction fan for seat surface
3. Push the plug connection together until it engages securely -arrows-.
Connecting plug connection on suction fan for seat surface
Information
Only for vehicles with memory seat adjustment.
Ensure that lines are routed correctly!
The wire harness from the seat adjustment switch to the memory control unit (black connector) must be routed between the suction fan for the seat surface and the suction fan holder arrow.
Information
Only for vehicles with memory seat adjustment.
Ensure that lines are routed correctly!
The wire harness from the seat adjustment switch to the memory control unit (black connector) must be routed between the suction fan for the seat surface and the suction fan holder arrow.
4. Move suction fan for seat surface together with the suction fan holder into installation position -arrow-.
Screwing in fastening screws on suction fan and holder
5. Tighten fastening screws -1 and 2-.
6. Slide connector socket onto the holder -arrow- until it clicks into place.
Attaching connector socket
Installing suction fan for seat surface (passenger's side)
1. Check rubber mounting -1- on holder for suction fan for seat surface for damage and replace it if necessary.
Checking rubber mounting on holder for suction fan for seat ventilation
Information
Ensure that the suction fan is installed at the correct position!
Information
Ensure that the suction fan is installed at the correct position!
2. Insert suction fan for seat surface into the air duct -arrow A- , press it in and turn anti-clockwise -arrow B- until the suction fan for the seat surface is fully locked in the air duct.
Installing suction fan for seat surface
3. Push plug connections together until they engages securely -arrows-.
Connecting plug connection on suction fan for seat surface
Information
Ensure that lines are routed correctly!
The wire harness must be routed between the suction fan for the seat surface and the suction fan holder arrow.
Information
Ensure that lines are routed correctly!
The wire harness must be routed between the suction fan for the seat surface and the suction fan holder arrow.
4. Move suction fan for seat surface together with the suction fan holder into installation position -arrow-.
Tightening fastening screws on suction fan and holder
5. Tighten fastening screws -1 and 2-.
6. Slide connector socket onto the holder -arrow- until it clicks into place.
Attaching connector socket
Subsequent work
Information
Only for vehicles with weight sensing AWS (USA) on the passenger's seat.
1. Install control unit for AWS. -> 696819 Removing and installing AWS control unit - section on "Installing" 696819 Removing and installing AWS control unit
Information
Driver's side only:
2. Install control unit for memory seat adjustment. -> 729319 Removing and installing control unit for memory seat adjustment - section on "Installing" 72931900 Removing and installing control unit for memory seat adjustment
3. Install the front seat. -> 720119 Removing and installing front seat - section on "Installing" 720119 Removing and Installing Front Seat
4. Connect the battery. -> 2706IN00 Work instructions after disconnecting the battery
5. Perform function test on suction fan.