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Home/Cars/Volkswagen/Passat/B9 (2024-Present)/my Volkswagen Passat B8 (2015-2022) won't start just clicks what to do

my Volkswagen Passat B8 (2015-2022) won't start just clicks what to do

Volkswagen Passat B9 (2024-Present)

Severity: highDifficulty: medium1-3 hours
3 min read
521 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 a no-start issue in Volkswagen Passat B8 (2015-2022). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Component
Electrical
Repair Time
1-3 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems to prevent shock or short circuits.
  • ⚠Allow the engine to cool before working on any components.

Symptoms

  • •Engine fails to crank, only produces a clicking sound
  • •Dashboard lights dim or flicker when attempting to start
  • •Battery warning light illuminated
  • •Electrical accessories may operate slowly or not at all
  • •Possible intermittent starting issues prior to complete failure

Diagnostic Steps

  1. 1Check the battery voltage with a multimeter to ensure it is above 12.4 volts.
  2. 2Inspect battery terminals for corrosion or loose connections.
  3. 3Test the starter motor by bypassing it with a remote starter switch.
  4. 4Verify the functionality of the ignition switch by checking for power at the starter when the key is turned.
  5. 5Check for any blown fuses related to the starting system.
  6. 6Inspect the wiring and connections from the battery to the starter for any signs of damage.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Ensure the vehicle is in park (automatic) or neutral (manual).
  • Disconnect the battery negative terminal to avoid electrical shock.

2. Battery Inspection and Replacement

  • Tools Required: Multimeter, Battery terminal cleaner, Socket set
  • Check battery condition:
    1. Use a multimeter to measure voltage; if below 12.4 volts, charge or replace the battery.
    2. Clean battery terminals using a battery terminal cleaner to remove corrosion.
    3. Tighten any loose connections at the battery.
    4. If the battery is over 3-5 years old or shows signs of failure, replace it.

3. Starter Motor Testing and Replacement

  • Tools Required: Socket set, Remote starter switch, Torque wrench
  • Test and replace starter motor:
    1. Locate the starter motor (generally near the transmission).
    2. Use a remote starter switch to bypass the starter solenoid; if the motor turns, the solenoid may be faulty.
    3. If the starter motor is defective, remove it by unbolting it from the engine block.
    4. Install the new starter motor, ensuring to torque the bolts to manufacturer specifications (typically around 15-25 Nm).
    5. Reconnect the wiring harness to the starter motor.

4. Final Assembly

  • Reconnect the battery negative terminal.
  • Ensure all tools are removed from the engine bay.
  • Start the vehicle to check if the problem is resolved.

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

  • Multimeter
  • Battery terminal cleaner
  • Socket set
  • Torque wrench
  • Remote starter switch

Parts Required

  • New battery (if needed)
  • New starter motor (if needed)

Additional Information

Component

Electrical

Repair Time

1-3 hours

Difficulty

medium

Severity

high

Tools

5 items

Parts

2 items

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