how to fix P0700 code 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 parking brake is engaged.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission fluid dipstick (if equipped) and check fluid level.
  2. If low, add the manufacturer-recommended transmission fluid until it reaches the proper level.
  3. If the fluid is dirty or burnt, proceed to drain and replace:
     • Remove the transmission drain plug with a socket set; allow fluid to drain completely.
     • Replace the drain plug and torque to manufacturer specifications.
     • Refill with the correct type and amount of transmission fluid through the dipstick tube or designated fill point.
• Tools Required: Socket set, transmission fluid, funnel.
• Safety Warnings: Allow the engine to cool before working on the transmission. Wear gloves to protect against hot fluid.

3. Inspect and Repair Wiring

• Sub-steps:
  1. Visually inspect the wiring harness and connectors leading to the TCM for damage or corrosion.
  2. Repair or replace any damaged wires or connectors using appropriate electrical connectors.
  3. Ensure all connections are secure before proceeding.
• Tools Required: Wire strippers, electrical connectors, multimeter.

4. TCM Testing and Replacement (if necessary)

• Sub-steps:
  1. Use a multimeter to test the voltage at the TCM connector; compare readings to specifications in the service manual.
  2. If the TCM is faulty, disconnect the battery, remove the old TCM, and install a new unit:
     • Disconnect wiring harness and remove mounting bolts.
     • Install the new TCM and reconnect wiring harness.
  3. Reconnect the battery.
• Tools Required: Multimeter, socket set, torque wrench.
• Safety Warnings: Disconnect the battery before working on electrical systems to prevent short circuits.