Automatic transmission Nissan Primera P12
Model: RE4F03B
Type: 4-speed automatic transmission with torque converter
Gear ratio:
* 1st gear: 3.538
* 2nd gear: 1.944
* 3rd gear: 1.348
* 4th gear: 0.973
* Reverse gear: 3.231
Specifications:
*Hydraulic Control: The hydraulic control unit controls gear shifting based on speed, load and throttle position.
* Planetary Gear: The gearbox uses a planetary gear to change gears, ensuring smooth and efficient shifting.
* Torque Converter: The torque converter transfers power from the engine to the transmission, providing smooth starting and additional torque boost.
* Gear Hold Mode: This feature allows the driver to hold the current gear on slopes or when driving uphill, preventing unwanted gear changes.
Switch settings:
* Norm: Standard shift mode for normal driving.
* Power: More aggressive shift mode for improved acceleration.
* Hold: Gear holding mode for driving on slopes and when driving uphill.
Service:
*Regular transmission fluid (ATF) changes are very important to ensure smooth shifting and extend transmission life.
*Transmission fluid must meet manufacturer’s recommendations (Nissan Matic Fluid D).
* Periodic transmission maintenance is recommended, which includes replacing filters and checking for leaks and signs of wear.
Potential problems:
Like any automatic transmission, the RE4F03B can be subject to certain problems over time, including:
*Clutch slippage
* Tightening the gear shift
* Transmission fluid leaks
*Damage to planetary gear