SECTION 307-01: Automatic Transaxle/Transmission — 6R80
2014 Mustang Workshop Manual
GENERAL PROCEDURES
Procedure revision date: 01/07/2013

Transmission Fluid Drain and Refill


Special Tool(s)
Rubber Tip Air Nozzle
100-D009 (D93L-7000-A)
Transmission Fluid Fill Tube
307-570
Transporter Fluid Evacuator/Injector
307-D465 or equivalent
Vacuum Pump Kit
416-D002 (D95L-7559-A) or equivalent
Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

Material
Item Specification
Motorcraft® MERCON® LV Automatic Transmission Fluid
XT-10-QLVC (US); CXT-10-LV12 (Canada)
MERCON® LV
 

Drain

  1. With the vehicle in NEUTRAL, position it on a hoist. Refer to Section 100-02 .
  1. Remove the transmission fluid pan and allow the transmission fluid to drain.
  1. NOTE: The transmission fluid pan gasket can be reused if not damaged.

    Install a new transmission fluid pan gasket, if required.
  1. Install the transmission fluid pan and tighten the bolts in a crisscross pattern.
 

Refill

NOTICE: This procedure contains the air purge steps required to purge air from the transmission fluid cooling system. This procedure is NOT intended for use with the Transmission Fluid Level Check.

NOTICE: The vehicle should not be driven if the transmission fluid level is low as internal failure could result.

NOTICE: The transmission fluid fill plug is located near the exhaust system. The exhaust will be extremely hot during this procedure.

NOTICE: The use of any other transmission fluid than specified can result in the transmission failing to operate in a normal manner or transmission failure.

NOTE: If the transmission starts to slip, shifts slowly or shows signs of transmission fluid leaking, the transmission fluid level should be checked.

NOTE: Here is an overview of the Transmission Fluid Drain and Refill procedure.

  1. NOTE: The transmission will need 3.3L (3.5 qt) of transmission fluid added to the transmission as an initial fill if:

    Using the Transmission Fluid Fill Tube, add 3.3L (3.5 qt) of transmission fluid to the transmission through the transmission fluid fill hole. Refer to Adding Additional Transmission Fluid in this procedure.
  1. Separate the transmission fluid level indicator from the transmission fluid fill plug.
  1. Check the transmission fluid level.
  1. NOTICE: The vehicle is safe to drive with a cold TFT if the transmission fluid level is in the transmission fluid level indicator area below the crosshatch mark as shown. Failure to add transmission fluid to this level can result in damage to the transmission.

    Add transmission fluid to the area on the transmission fluid level indicator below the crosshatch mark as shown.
  1. Install the transmission fluid fill plug.
  1. NOTE: Always drive the vehicle in a safe manner according to driving conditions and obey all traffic laws.

    Drive the vehicle. While driving the vehicle, use the scan tool to verify that the TFT has reached a temperature of 88°C (190°F). This will circulate the transmission fluid through the torque converter and the transmission fluid cooling system, eliminating any trapped air in the transmission fluid cooling system.
  1. With the vehicle in NEUTRAL, position it on a hoist. Refer to Section 100-02 .
  1. Remove the transmission fluid fill plug transmission fluid level indicator assembly located on the passenger side front portion of the transmission case.
  1. Separate the transmission fluid level indicator from the transmission fluid fill plug.
  1. Wipe the transmission fluid level indicator clean. Reinstall only the transmission fluid level indicator back into the transmission fluid fill plug hole to check the transmission fluid level. Repeat this until a consistent reading is established.
  1. NOTE: The transmission fluid level indicator has 2 areas for the fluid level, a crosshatched (labeled A) area and a dotted (labeled B) area. Use the crosshatched area when checking the transmission fluid level. The correct transmission fluid level is at the upper level of the crosshatch marks on the transmission fluid level indicator.

    Using the scan tool verify that the TFT is between 80ºC-85ºC (176ºF-185ºF). The transmission fluid level must be at the upper level of the crosshatch mark.
  1. NOTE: If the transmission fluid is not at the correct level, follow the steps for Adding Additional Transmission Fluid or Removing Transmission Fluid in this procedure.

    Install the transmission fluid fill plug.
 

Adding Additional Transmission Fluid

NOTE: To get an accurate transmission fluid level reading the engine should be idling (600-750 rpm) in PARK.

  1. Install the Transmission Fluid Fill Tube into the transmission fluid fill hole.
  1. Fill the Transporter Fluid Evacuator/Injector with approximately 0.47L (1 pt) of transmission fluid.
  1. Hang the Transporter Fluid Evacuator/Injector under the vehicle, upright and close to the transmission.
  1. Connect the Transporter Fluid Evacuator/Injector and Transmission Fluid Fill Tube.
  1. Use a Rubber Tip Air Nozzle to apply a maximum of 206.85 kPa (30 psi) to the open end of the vacuum/pressure hose from the Transporter Fluid Evacuator/Injector. Transmission fluid will immediately start flowing out of the Transporter Fluid Evacuator/Injector into the transmission.
  1. NOTE: Do not overfill the transmission. The transmission fluid level must be at the upper level of the crosshatch mark.

    Reinstall the transmission fluid level indicator only back into the transmission fluid fill plug hole to check the transmission fluid level. Repeat this until a consistent reading is established.
  1. Using the scan tool, verify that the TFT is between 80ºC-85ºC (176ºF-185ºF). The transmission fluid level must be at the upper level of the crosshatch mark.
  1. NOTE: If the transmission fluid is over full, follow the steps for Removing Transmission Fluid in this procedure.

    Install the transmission fluid fill plug.
 

Removing Transmission Fluid

NOTE: To get an accurate transmission fluid level reading the engine should be idling (600-750 rpm) in PARK.

  1. If the transmission is overfilled, transmission fluid must be removed to the correct level. Use the Transporter Fluid Evacuator/Injector and the Vacuum Pump Kit to extract any excessive transmission fluid.
  1. Using the scan tool, verify that the TFT is between 80ºC-85ºC (176ºF-185ºF). The transmission fluid level must be at the upper level of the crosshatch mark. Reinstall only the transmission fluid level indicator back into the transmission fluid fill plug hole to check the transmission fluid level. Repeat this until a consistent reading is established.
  1. Install the transmission fluid fill plug.