975719 Removing and installing wire harness for seat surface (front seat)
WM 975719 Removing and installing wire harness for seat surface (front seat)
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"
3. Mount the front seat on the assembly fixture. => 7201IN Mounting front seat on assembly fixture
4. Remove control unit for memory seat adjustment. => 729319 Removing and installing control unit for memory seat adjustment - section on "Removing"
5. Remove suction fan for seat surface. => 740919 Removing and installing suction fan for seat surface - section on "Removing"
Information
Only required for wire harness for suction fan and seat heating.
6. Remove covering for middle backrest. => 742019 Removing and installing front middle backrest cover (air-conditioned comfort seat) - section on "Removing"
Information
Only required for wire harness for suction fan and seat heating.
7. Loosen covering for front backrest on the left side until you can reach the backrest cover. => 741919 Removing and installing front backrest cover (air-conditioned comfort seat) - section on "Removing"
Information
Only required for wire harness for suction fan and seat heating.
8. Remove backrest cover on the left side at the inside and outside. => 722619 Removing and installing cover for backrest - section on "Removing"
Removing wire harness for seat surface (front seat)
Information
The description covers the three-part wire harness for seat surface with memory. Certain plug connections are not present on the two-part wire harness without memory.
Installation position of wire harness for seat surface (front seat)
Connector overview of wire harness for seat surface (front seat)
Connector overview of wire harness for seat surface (front seat)
1. Release and pull off connector -2- on seat adjustment motor. => 728719 Removing and installing motor for seat adjustment - section on "Removing"
2. Release and pull off connector -3- on motor for rear vertical adjustment. => 729219 Removing and installing motor for rear vertical adjustment - section on "Removing"
3. Release and pull off connector -4- on motor for front vertical adjustment. => 728819 Removing and installing motor for front vertical adjustment - section on "Removing"
4. Take off tie-wraps -13- and remove wire harness -X-.
5. Release and pull off connector -6- on seat adjustment switch. => 721619 Removing and installing control panel trim - section on "Removing"
6. Take off tie-wraps -13- and remove wire harness -Y-.
7. Remove tie-wrap -2- on the connector socket -1-.
Disassembling connector socket
8. Release connector socket -1- ( -arrows a- ) and remove the three single connectors -3-.
9. Release connector for seat surface heating -9- ( -arrows A- ) and pull it off -arrow B-.
Pulling off connector for seat surface heating
10. Release connector on suction fan for backrest -11- ( -arrow A- ) and pull it off -arrow B-.
Pulling off connector on suction fan for backrest
11. Take off tie-wraps -13- and remove wire harness -Z- by pulling it downwards -arrow C-.
12. Take wire harness -Z- at the underside of the seat out of the line brackets -12- and remove it.
Installing wire harness for seat surface (front seat)
Information
Observe connector assignment!
Connect blue connector to the motor for fore-and-aft adjustment.
Connect white connector to the motor for front vertical adjustment.
Connect yellow connector to the motor for rear vertical adjustment.
Connector overview of wire harness for seat surface (front seat)
Connector overview of wire harness for seat surface (front seat)
1. Route wire harness -Z- at the underside of the seat and press it into the line brackets -12-.
2. Slide wire harness -Z- through in an upward direction -arrow A- and secure with a new tie-wrap -13-.
Plugging in connector on suction fan for backrest
3. Plug in connector on suction fan for backrest -11- ( -arrow B- ) until it engages securely.
4. Plug in connector on seat surface heating -9- ( -arrow- ) until it engages securely.
Plugging in connector on seat surface heating
5. Slide the three single connectors -3- into the connector socket -1- until they engage securely.
Assembling connector socket
6. Fit a new tie-wrap -2- on the connector socket -1-.
7. Route wire harness -Y- and secure with new tie-wraps -13-.
8. Plug in connector -6- on seat adjustment switch until they engage securely. => 721619 Removing and installing control panel trim - section on "Installing"
9. Route wire harness -X- and secure with new tie-wraps -13-.
10. Plug in connector -4- (white ) on motor for front vertical adjustment until it engages securely. => 728819 Removing and installing motor for front vertical adjustment - section on "Installing"
11. Plug in connector -3- (yellow ) on motor for rear vertical adjustment until it engages securely. => 729219 Removing and installing motor for rear vertical adjustment - section on "Installing"
12. Plug in connector -2- (blue ) on seat adjustment motor until it engages securely. => 728719 Removing and installing seat adjustment motor - section on "Installing"
Subsequent work
Information
Only required for wire harness for suction fan and seat heating.
1. Install backrest cover on the left side at the inside and outside. => 722619 Removing and installing cover for backrest - section on "Installing"
Information
Only required for wire harness for suction fan and seat heating.
2. Secure front backrest covering underneath at the left side. => 741919 Removing and installing front backrest cover (air-conditioned comfort seat) - section on "Installing"
Information
Only required for wire harness for suction fan and seat heating.
3. Install covering for middle backrest. => 742019 Removing and installing front middle backrest cover (air-conditioned comfort seat) - section on "Installing"
4. Install suction fan for seat surface. => 740919 Removing and installing suction fan for seat surface - section on "Installing"
5. Install control unit for memory seat adjustment. => 729319 Removing and installing control unit for memory seat adjustment - section on "Installing"
6. Install the front seat. => 720119 Removing and installing front seat - section on "Installing"
7. Connect the battery. => 2706IN00 Work instructions after disconnecting the battery