The A750F is the 5-speed automatic transmission fitted to every Toyota FJ Cruiser with the 4.0L 1GR-FE V6 engine, covering the full US production run from 2006 to 2014. It is a well proven unit that owners on fjcruiserforums generally speak positively about most problems that do come up are fluid related rather than mechanical, which makes it a relatively low maintenance transmission when serviced correctly.
The same transmission family is also used in the 4Runner and Tacoma of the same generation, which means parts availability is good and there is a large pool of owner experience to draw from when something does go wrong.
Download A750F Repair Manual PDF 16.67 MB
Download A750E Repair Manual PDF 16.17 MB
What is the A750F Transmission?
The A750F is a rear-wheel drive 5-speed automatic transmission developed by Aisin for Toyota. In the FJ Cruiser it is paired with the 4.0L 1GR-FE V6 producing 239 hp and 278 lb-ft of torque. The transmission uses Toyota WS (World Standard) ATF, which is a low viscosity fluid specific to this unit. Using the wrong fluid is one of the most common mistakes owners make during a fluid change and can cause shifting issues relatively quickly.
A750F vs A750E What is the Difference?
The A750E is the 4WD version of the same transmission family. The A750F is the rear-wheel drive variant. In the FJ Cruiser the A750F is used in the part-time 4WD configuration. They share similar internal components but are not interchangeable as complete units. Parts from one can sometimes be used in the other but this should be verified against the repair manual for the specific component.
A750F Transmission Diagram
The A750F repair manual includes full transmission diagrams covering the valve body, gear train, hydraulic circuit, and torque converter assembly. Download the manual above to access the complete set of diagrams for the A750F and A750E.
Common A750F & A750E Transmission Problems
Owners on fjcruiserforums and r/FJCruiser report a fairly consistent set of issues with the A750F over high mileage.
Harsh or delayed shifting
The most commonly reported issue, typically appearing after 100,000 miles. Usually caused by worn fluid that has not been changed on schedule or by using incorrect ATF. Most owners report that a fluid flush with fresh Toyota WS fluid resolves minor shifting complaints. Some owners do a double drain and fill drain, refill, drive 500 miles, drain and refill again to get as much old fluid out as possible since the A750F does not have a drain plug on the torque converter.
Shudder on light throttle
A torque converter shudder that feels like a mild vibration or flutter at light throttle around 40 to 50 mph is a known issue on higher mileage units. Fresh WS fluid often resolves it. If it persists after a fluid change, the torque converter itself may need attention.
Transmission slipping
Less common than shifting complaints but reported on high mileage units. Usually indicates worn clutch packs inside the transmission. At this point a rebuild or replacement becomes the conversation.
Error codes
The most common transmission related codes on the FJ Cruiser A750F are P0770 and P0773, both related to the shift solenoid E. These come up on the forums regularly and are worth checking if the check engine light comes on alongside any shifting issues.
A750F & A750E Fluid Specifications and Service Intervals
Toyota specifies Toyota ATF WS fluid for the A750F. This is non-negotiable other ATF fluids including Dexron VI are not compatible and will cause shifting problems over time.
Toyota’s official service interval is listed as lifetime fill in some documentation, but owners on the forums universally disagree with this. The consensus on fjcruiserforums is to change the fluid every 30,000 to 45,000 miles, especially on trucks used for towing or off-road driving where the transmission works harder and fluid degrades faster.
The A750F holds approximately 3.7 quarts of fluid for a drain and fill. A full flush holds significantly more but requires special equipment.
Recommended Tools and Parts for A750F & A750E Service
If you are servicing the A750F yourself, these are the items you will need:
- Toyota ATF WS fluid — minimum 4 quarts for a drain and fill
- 3/8″ square drain plug socket
- Fluid transfer pump for refilling through the dipstick tube
- OBD2 scanner for reading transmission codes