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Home/Cars/Porsche/Cayenne/E3 (2018-Present)/my Porsche 911 992 (2019-Present) transmission slips when shifting gears what's wrong

my Porsche 911 992 (2019-Present) transmission slips when shifting gears what's wrong

Porsche Cayenne E3 (2018-Present)

Error Codes
Severity: highDifficulty: medium2-4 hours
3 min read
483 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix transmission slipping issues in Porsche 911 992. Step-by-step guide with diagnostic procedures and repair instructions.

Component
Transmission
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical components.
  • ⚠Allow the engine and transmission to cool before performing any service.

Symptoms

  • •Transmission slips during acceleration
  • •Harsh or delayed shifting between gears
  • •Unusual whining or grinding noise when shifting
  • •Check engine light illuminated
  • •Fluid leak under the vehicle

Diagnostic Steps

  1. 1Scan the vehicle's OBD-II system for error codes related to the transmission.
  2. 2Check the transmission fluid level and condition (color, smell).
  3. 3Inspect the transmission linkage for any signs of damage or misalignment.
  4. 4Test the transmission fluid pressure using a pressure gauge.
  5. 5Verify the operation of the transmission control module (TCM) using diagnostic software.
  6. 6Examine the wiring and connectors related to the TCM for any signs of corrosion or damage.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
  • Disconnect the battery to prevent electrical shorts.

2. Fluid Change

  • Sub-steps:
    1. Remove the transmission fluid pan using a socket set, ensuring to catch any fluid in a drain pan.
    2. Replace the transmission filter if applicable.
    3. Clean the pan and magnet, removing any debris.
    4. Reinstall the pan with a new gasket and torque bolts to manufacturer specifications (typically around 8-10 Nm).
    5. Refill the transmission with the appropriate type and amount of fluid (Porsche recommends their own PDK fluid).

3. Linkage Adjustment

  • Sub-steps:
    1. Inspect the transmission linkage for wear and damage.
    2. If misaligned, adjust the linkage according to the service manual specifications.
    3. Test the linkage operation by moving through each gear.

4. TCM Reset

  • Sub-steps:
    1. Reconnect the battery.
    2. Use the OBD-II scanner to reset the TCM.
    3. Clear any stored codes and recheck for new codes after a test drive.

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

  • OBD-II scanner
  • Socket set
  • Torque wrench
  • Transmission fluid pressure gauge
  • Drain pan
  • Fluid transfer pump

Parts Required

  • Transmission fluid (Porsche PDK fluid)
  • Transmission filter (if applicable)
  • Transmission pan gasket

Additional Information

Component

Transmission

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

6 items

Parts

3 items

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