how to fix BMW 5 Series G30/G31 (2017-2024) transmission jerking when shifting

BMW 5 Series G30/G31 (2017-2024)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

523 words

Problem Statement

The BMW 5 Series G30/G31 (2017-2024) is experiencing transmission jerking during shifting, which can indicate issues with the transmission fluid, control module, or mechanical com

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool before working on the transmission.

Symptoms

•Noticeable jerking or harsh shifts during acceleration or deceleration
•Slipping of the transmission between gears
•Delayed engagement when shifting into gear
•Increased engine RPM without corresponding vehicle speed increase
•Check engine light illuminated (potentially related to transmission codes)

Diagnostic Steps

1
Scan the vehicle for error codes using an OBD-II scanner to identify any transmission-related fault codes.
2
Check the transmission fluid level and condition; look for discoloration or burnt smell.
3
Inspect the transmission control module (TCM) for software updates or fault indicators.
4
Examine the transmission mounts for wear or damage that could affect shifting.
5
Perform a road test to replicate the jerking issue under various driving conditions.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Safety Warnings:** Allow the engine to cool before working on the transmission.

Parts Required

•Transmission fluid (OEM recommended)
•Transmission mounts (if worn)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Symptoms

•Noticeable jerking or harsh shifts during acceleration or deceleration

•Slipping of the transmission between gears

•Delayed engagement when shifting into gear

•Increased engine RPM without corresponding vehicle speed increase

•Check engine light illuminated (potentially related to transmission codes)

Diagnostic Steps

1
Scan the vehicle for error codes using an OBD-II scanner to identify any transmission-related fault codes.
2
Check the transmission fluid level and condition; look for discoloration or burnt smell.
3
Inspect the transmission control module (TCM) for software updates or fault indicators.
4
Examine the transmission mounts for wear or damage that could affect shifting.
5
Perform a road test to replicate the jerking issue under various driving conditions.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the battery to ensure safety during repairs.

2. Check and Change Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick or fill port.
2. Use a fluid extraction pump to remove old transmission fluid.
3. Inspect the fluid for debris or metal shavings.
4. Replace with the manufacturer's recommended transmission fluid (e.g., BMW ATF).
5. Refill through the dipstick or fill port to the proper level.
Tools Required: Fluid extraction pump, funnel, torque wrench.
Safety Warnings: Allow the engine to cool before working on the transmission.

3. Update Transmission Control Module (if applicable)

Sub-steps:
1. Reconnect the battery.
2. Use an OBD-II scanner to access the TCM.
3. Check for available software updates from the manufacturer.
4. Follow the scanner prompts to update the TCM software if necessary.
Tools Required: OBD-II scanner.
Safety Warnings: Ensure the vehicle is in Park mode during updates.

4. Inspect and Replace Transmission Mounts (if worn)

Sub-steps:
1. Raise the vehicle securely on jack stands.
2. Locate the transmission mounts and inspect for cracks or excessive wear.
3. Remove bolts securing the mounts and replace with new mounts.
4. Torque the new mounts to manufacturer specifications.
Tools Required: Socket set, torque wrench.
Safety Warnings: Ensure the vehicle is stable on jack stands before working underneath.