my Toyota Highlander Third Generation (2014-2019) engine is making a ticking noise, what can it be?

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

507 words

Problem Statement

Learn how to diagnose and fix engine ticking noise in Toyota Highlander (2014-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems
•Allow engine to cool before opening the valve cover

Symptoms

•Ticking noise coming from the engine compartment
•Decreased engine performance or power
•Engine misfires or rough idling
•Check engine light illuminated (potentially)
•Increased engine vibrations

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Check engine oil level and condition to ensure proper lubrication
3
Inspect the valve cover for any signs of oil leaks or loose components
4
Listen for the ticking noise at different RPMs to determine if it changes with engine speed
5
Examine the exhaust system for leaks that may sound like a ticking noise
6
Check for loose or damaged accessories like the alternator or power steering pump that could contribute to the noise

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
•Oil filter wrench
•Oil catch pan

Parts Required

•Engine oil
•Oil filter
•Valve cover gasket (if needed)
•Lifters or rocker arms (if needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any diagnostic trouble codes (DTCs)
2
Check engine oil level and condition to ensure proper lubrication
3
Inspect the valve cover for any signs of oil leaks or loose components
4
Listen for the ticking noise at different RPMs to determine if it changes with engine speed
5
Examine the exhaust system for leaks that may sound like a ticking noise
6
Check for loose or damaged accessories like the alternator or power steering pump that could contribute to the noise

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a flat surface and the engine is cool.
Disconnect the battery to prevent any electrical issues during work.

2. Check Engine Oil

Sub-steps:
- Remove the engine oil dipstick and wipe it clean.
- Reinsert it and check the oil level; add oil if necessary.
- If the oil is dirty or low, perform an oil change.
Tools Required: Oil filter wrench, socket set, oil catch pan.

3. Inspect Valve Train Components

Sub-steps:
- Remove the valve cover using a socket set.
- Visually inspect the rockers, lifters, and pushrods for wear or damage.
- Replace any worn or damaged components as needed (e.g., lifters, rocker arms).
Tools Required: Torque wrench, socket set, gasket scraper.
Safety Warnings: Ensure the engine is cool to prevent burns.

4. Examine Exhaust System

Sub-steps:
- Inspect exhaust manifold and gaskets for leaks.
- Tighten any loose bolts or replace damaged gaskets.
Tools Required: Torque wrench, socket set.

5. Reassemble and Test

Sub-steps:
- Reattach the valve cover with a new gasket if replaced.
- Reconnect the battery.
- Start the engine and listen for the ticking noise.
Tools Required: None additional.