how to fix transmission codes P0700 in Volkswagen Golf Seventh Generation (2013-2020)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and the engine is turned off.
• Safety gear: gloves and safety glasses.

2. Check Transmission Fluid

• Tools Required: Transmission fluid dipstick, funnel, new transmission fluid (as specified by manufacturer).
• Remove the transmission dipstick and wipe it clean.
• Reinsert the dipstick and remove it again to check the fluid level. Add fluid if low, and inspect for discoloration or burnt smell.
• If the fluid is contaminated, perform a transmission fluid flush.

3. Inspect Wiring and Connectors

• Tools Required: Multimeter, wire brush (if needed).
• Disconnect the battery to avoid short circuits.
• Visually inspect the wiring harness and connectors leading to the TCM and transmission for damage.
• Use a multimeter to check for continuity in the wires. Repair or replace any damaged wires or connectors.

4. Replace Transmission Control Module (if necessary)

• Tools Required: Socket set, Torx bit set, torque wrench.
• Locate the TCM, typically found near the transmission.
• Disconnect the battery again and remove the TCM connectors.
• Unbolt and remove the TCM from its mount.
• Install the new TCM, ensuring it is securely bolted and connectors are properly attached.
• Reconnect the battery.

5. Clear Codes and Test Drive

• Tools Required: OBD-II scanner.
• Use the OBD-II scanner to erase the P0700 code and any related codes.
• Start the engine and perform a test drive to ensure the transmission shifts smoothly and the check engine light remains off.