my Porsche Cayenne E3 (2018-Present) transmission jerks when shifting, how to fix it?

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, fluid catch basin, funnel.
• Safety Warnings: Disconnect the battery before working on electrical systems. Allow the engine to cool before checking fluid levels.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Lift the vehicle securely using jack stands.
  2. Locate the transmission fluid dipstick or fill port.
  3. Remove the dipstick/fill port and check fluid level; if low, add fluid as necessary.
  4. If the fluid is dark or smells burnt, drain the old fluid completely using a catch basin.
  5. Replace with manufacturer-recommended transmission fluid, ensuring the correct type (consult owner’s manual for specifications).
  6. Recheck fluid level after filling and run the engine to circulate fluid, then adjust level if needed.

3. Inspect and Repair Transmission Control Module

• Sub-steps:
  1. Locate the transmission control module (typically found near the transmission housing).
  2. Disconnect the module's electrical connector.
  3. Inspect for corrosion, dirt, or damage to the connectors and wiring.
  4. Clean contacts with an electrical contact cleaner if necessary.
  5. Reconnect the module and clear any existing codes with the OBD-II scanner.

4. Address Mechanical Issues

• Sub-steps:
  1. Inspect engine and transmission mounts; replace if cracked or worn.
  2. If jerking persists, a more in-depth inspection of internal transmission components may be necessary, which could involve disassembly.
  3. Consult a professional if internal repairs are required, as this is complex and involves specialized knowledge.