how to troubleshoot my Volkswagen Passat B8 (2015-2022) that won’t go into gear

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter, torque wrench, transmission fluid.
• Safety Warnings: Disconnect the battery before working on electrical components to avoid shorts and electrical shocks.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick and remove it.
  2. Wipe it clean and reinsert it, then remove again to check the fluid level.
  3. If low, add the appropriate transmission fluid as specified in the owner’s manual.
  4. If the fluid is dirty or burnt, drain the transmission fluid using a socket set and replace with fresh fluid.

3. Inspect and Repair Gear Shifter

• Sub-steps:
  1. Remove the gear shifter cover to access the internal components.
  2. Check for any loose or disconnected cables/linkages and secure or replace as necessary.
  3. If the shifter is damaged, replace it with a new component.

4. Examine Electrical Connections

• Sub-steps:
  1. Locate the TCM and visually inspect for any loose or corroded connectors.
  2. Use a multimeter to check for proper voltage and ground at the TCM.
  3. Repair or replace any faulty connectors or wiring as needed.

5. Test and Replace Brake Switch

• Sub-steps:
  1. Locate the brake switch, usually mounted near the brake pedal.
  2. Use a multimeter to test the switch for continuity when the brake pedal is pressed.
  3. If defective, replace the brake switch with a new one.