how to check if the transfer case is failing in my Tesla Outback 5th Generation (2015-2019)

Subaru Outback 5th Generation (2015-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

506 words

Problem Statement

Learn how to diagnose and fix transfer case issues in the 2015-2019 Tesla Outback. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting the transfer case.

Symptoms

•Unusual noises when driving, such as grinding or clunking sounds
•Difficulty in shifting between drive modes (e.g., from 2WD to AWD)
•Warning lights illuminated on the dashboard related to drivetrain issues
•Vibration or shaking felt through the vehicle during acceleration
•Reduced performance in all-wheel-drive functionality

Diagnostic Steps

1
Inspect the transfer case fluid level and condition; check for contamination or burnt smell.
2
Scan the vehicle's onboard computer for any diagnostic trouble codes (DTCs) using an OBD-II scanner.
3
Visually inspect the transfer case for any signs of leaks or physical damage.
4
Test the operation of the transfer case by engaging different drive modes and observing functionality.
5
Check the driveshaft and axles for any signs of wear or damage that may affect transfer case performance.

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
•Socket set
•Torque wrench
•Multimeter
•Fluid pump

Parts Required

•Transfer case fluid (manufacturer-recommended type)
•Seals or gaskets if leakage is detected

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Symptoms

•Unusual noises when driving, such as grinding or clunking sounds

•Difficulty in shifting between drive modes (e.g., from 2WD to AWD)

•Warning lights illuminated on the dashboard related to drivetrain issues

•Vibration or shaking felt through the vehicle during acceleration

•Reduced performance in all-wheel-drive functionality

Diagnostic Steps

1
Inspect the transfer case fluid level and condition; check for contamination or burnt smell.
2
Scan the vehicle's onboard computer for any diagnostic trouble codes (DTCs) using an OBD-II scanner.
3
Visually inspect the transfer case for any signs of leaks or physical damage.
4
Test the operation of the transfer case by engaging different drive modes and observing functionality.
5
Check the driveshaft and axles for any signs of wear or damage that may affect transfer case performance.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the battery to prevent electrical issues.

2. Fluid Check and Replacement

Sub-steps:
1. Remove the fill plug from the transfer case using a socket wrench.
2. Insert a dipstick or finger to check the fluid level; it should be at the bottom of the fill hole.
3. If the fluid is low or dirty, drain the existing fluid using a fluid pump.
4. Replace with manufacturer-recommended transfer case fluid (check owner’s manual for specifications).
5. Reinstall the fill plug and torque to manufacturer specifications.

3. Component Inspection

Sub-steps:
1. Remove any covers or shields obstructing access to the transfer case.
2. Inspect the case for any cracks or damaged seals.
3. Check the mounting bolts for tightness; retighten if necessary.
4. Examine the output shafts for play or excessive wear.

4. Electrical and Sensor Check

Sub-steps:
1. Reconnect the battery and scan for DTCs again.
2. Inspect the wiring and connectors to the transfer case control module for corrosion or damage.
3. Test the operation of any sensors related to the transfer case using a multimeter.