how to fix BMW X3 G01 (2018-2024) transmission jerking when accelerating

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, torque wrench, transmission fluid, and a funnel.
• Ensure the vehicle is parked on a level surface and the engine is turned off.

2. Transmission Fluid Check

• Sub-step 1: Remove the transmission dipstick (if applicable) and check the fluid level.
• Sub-step 2: If the fluid is low, add the recommended transmission fluid as specified in the owner’s manual.
• Sub-step 3: If the fluid is dirty or smells burnt, proceed to drain and replace the fluid.

3. Fluid Replacement

• Sub-step 1: Raise the vehicle securely using jack stands.
• Sub-step 2: Locate the transmission drain plug, remove it, and allow old fluid to drain completely.
• Sub-step 3: Replace the drain plug with a new gasket and tighten to manufacturer torque specifications.
• Sub-step 4: Refill the transmission with new fluid using a funnel, ensuring the correct type and quantity.

4. Solenoid Inspection and Replacement

• Sub-step 1: Disconnect the battery to avoid electrical issues.
• Sub-step 2: Remove the transmission pan (if necessary) to access the solenoids.
• Sub-step 3: Test each solenoid with a multimeter, replacing any that do not meet specifications.
• Sub-step 4: Reinstall the transmission pan, using a new gasket, and torque to specifications.

5. Software Update

• Sub-step 1: Reconnect the battery.
• Sub-step 2: Use the OBD-II scanner to check for available software updates for the transmission control module.
• Sub-step 3: Follow the manufacturer’s instructions to update the software if an update is available.