how to diagnose electric power steering problems in my Volkswagen Golf MK6 (2009-2014)

Volkswagen Golf MK7 (2015-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

high

Severity

3 min read

595 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 electric power steering problems in Volkswagen Golf MK6 (2009-2014). Step-by-step guide with symptoms and solutions.

Affected Component

Steering

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid shocks or shorts.
•Allow the vehicle to cool down before inspecting or working on the power steering components.

Symptoms

•Steering wheel feels heavy or difficult to turn
•Intermittent or complete loss of power steering assist
•Steering wheel vibration or shaking
•Warning light illuminated on the dashboard
•Noisy power steering system during operation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related faults in the EPS system.
2
Inspect the power steering fuse and relay for continuity and proper operation.
3
Check the power steering fluid level and condition; look for leaks around the pump and hoses.
4
Visually inspect the electrical connections and wiring for any signs of damage or corrosion.
5
Test the EPS motor with a multimeter to ensure it is receiving proper voltage.
6
Verify the functionality of the steering angle sensor and torque sensor.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

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

•OBD-II scanner
•Multimeter
•Fuse puller
•Socket set
•Screwdriver set

Parts Required

•Power steering fluid (specific to VW specifications)
•Replacement fuse (if necessary)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related faults in the EPS system.
2
Inspect the power steering fuse and relay for continuity and proper operation.
3
Check the power steering fluid level and condition; look for leaks around the pump and hoses.
4
Visually inspect the electrical connections and wiring for any signs of damage or corrosion.
5
Test the EPS motor with a multimeter to ensure it is receiving proper voltage.
6
Verify the functionality of the steering angle sensor and torque sensor.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and turn off the ignition.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace the Fuse

Locate the fuse box (usually under the dashboard or in the engine compartment).
Use a fuse puller or pliers to remove the power steering fuse.
Inspect the fuse for continuity; replace if blown with the correct amperage fuse (refer to owner’s manual).

3. Check and Replace the Power Steering Fluid

Locate the power steering reservoir and remove the cap.
Check the fluid level and quality; if it's low or contaminated, drain and replace it.
Use the recommended fluid type (consult owner’s manual) and fill to the proper level.

4. Inspect Electrical Connections

Reconnect the battery and turn the ignition to the ON position without starting the engine.
Check all connectors and wiring harnesses related to the EPS for tightness and signs of corrosion.
Repair or replace any damaged wiring or connectors.

5. Test EPS Motor and Sensors

With the ignition in the ON position, measure the voltage at the EPS motor connector using a multimeter.
If voltage is present, check the resistance of the EPS motor; replace if out of specification.
Inspect the steering angle sensor and torque sensor; replace if faulty.

6. Reassemble and Test

Reassemble any components or covers removed during diagnosis.
Reconnect the negative battery terminal.
Start the vehicle and test the power steering for proper operation.