24 00... Topping up fluid additive in event of friction coefficient fluctuations during gearshifts from 3rd to 4th and 4th to 3rd (6HP26)

Special tools required: 

• 00 2 080  . See MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS .

Necessary preliminary tasks: 

• Raise vehicle
• Remove transmission underbody protection if necessary. See 51 47 491 REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION .
• For safety reasons (danger of burning), allow transmission fluid to cool down to a temperature below 40°C
• Read out transmission fluid temperature with Diagnosis and Information System (DIS)

The following procedure applies to replacing 1 liter of ATF with 1 liter of LifeGuardFluid One additive.

BMW part number: 83 29 0 422 194

A distinction must be made here between transmissions with plastic oil sumps and sheet metal oil sumps!

1. Transmission with plastic oil sump: 

   When engine is stopped, open 8 A/F transmission filler plug (1) and drain off 1 liter of transmission fluid.

   Catch transmission fluid in a measurement container.

   Fig 1: Identifying Transmission Filler Plug

   Courtesy of BMW OF NORTH AMERICA, INC.

   Start engine and allow engine to idle in with selector lever in P position.

   Pour in 1 liter of ZF LifeGuardFluid One additive with special tool 00 2 080  .

   Screw in transmission filler plug.

   Installation: 

   Tightening torque: 35 Nm.

   Attach the notice sticker supplied with the bottle to the side of the oil sump  next to the fluid filler plug.

   Then carry out a fluid level adjustment   to exclude the possibility of minimum filling.

   Fig 2: Identifying Special Tool (00 2 080)

   Courtesy of BMW OF NORTH AMERICA, INC.
2. Transmission with sheet metal oil sump: 

   When engine is stopped, open transmission filler plug in dome of oil sump (17 A/F hexagon socket head cap screw) and drain off 1 liter of transmission fluid.

   Catch transmission fluid in a measurement container.

   Fig 3: Locating Transmission Filler Plug

   Courtesy of BMW OF NORTH AMERICA, INC.

   Start engine and allow engine to idle in with selector lever in P position.

   Pour in 1 liter of ZF LifeGuardFluid One additive with special tool 00 2 080  .

   Screw in transmission filler plug.

   Installation: 

   Tightening torque: 80 Nm.

   Attach the notice sticker supplied with the bottle to the back  of the oil sump next to the fluid filler plug.

   Then carry out a fluid level adjustment  to exclude the possibility of minimum filling.

   Fig 4: Identifying Special Tool (00 2 080)

   Courtesy of BMW OF NORTH AMERICA, INC.