61 35 080 Removing and installing (replacing) control unit for left or right seat adjustment (front seat)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2005 BMW 745i, 2005 BMW 745Li, 2004 BMW 745i, 2004 BMW 745Li, and 2003 BMW 745i. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: In the event of a faulty seat module, new variants with a 30 mm wider housing will be used as replacements as of 03/2005.

The following SM variants are affected:

SM BA/M
SM BA/M-HK

In the event of a repair, some cables are laid a little tauter.

Necessary preliminary tasks:

Disconnect battery negative lead. Refer to 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD .

Unclip trim in upper rail at front (1) in direction of arrow and remove.

Fig 1: Removing Trim In Upper Rail At Front

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip trim in upper rail on outside (1) towards top, feed out towards rear and remove.

Fig 2: Removing Trim In Upper Rail On Outside

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For purposes of clarity, illustration shows seat frame folded up.

Fig 3: Removing Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connections (1).

Unlock catches (2) towards rear, feed out control unit for seat adjustment (3) in direction of arrow and remove.

Installation:

Make sure mounts (1) and retaining lugs (2) of control unit for seat adjustment (3) are correctly seated.

Fig 4: Identifying Mounts And Retaining Lugs

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Carry out coding/programming.

Observe following IDC specifications:

Programming
Coding
Car & Key Memory
CD "CIP"

Fig 5: View Of Control Unit

Courtesy of BMW OF NORTH AMERICA, INC.