how to fix Ford Explorer Sixth Generation (2020-present) coolant leak

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

539 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 coolant leaks in the 2020-present Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Cooling System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always allow the engine to cool before working on the cooling system to avoid burns.
•Dispose of old coolant properly, as it is toxic to animals and the environment.

Symptoms

•Overheating engine
•Low coolant level in the reservoir
•Coolant pooling under the vehicle
•Sweet odor from the engine bay
•Check engine light illuminated (related to engine temperature)

Diagnostic Steps

1
Inspect the coolant reservoir for cracks or leaks.
2
Check the radiator and hoses for visible signs of damage or leaks.
3
Examine the water pump for signs of leakage.
4
Use a pressure tester to pressurize the cooling system and identify the leak.
5
Look for any signs of coolant stains around the engine block or cylinder head.

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

•Socket set
•Screwdriver set
•Pliers
•Pressure tester
•Drain pan

Parts Required

•Coolant reservoir (if damaged)
•Radiator (if leaking)
•Hoses (if cracked or damaged)
•Water pump (if leaking)
•Coolant

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Diagnostic Steps

1
Inspect the coolant reservoir for cracks or leaks.
2
Check the radiator and hoses for visible signs of damage or leaks.
3
Examine the water pump for signs of leakage.
4
Use a pressure tester to pressurize the cooling system and identify the leak.
5
Look for any signs of coolant stains around the engine block or cylinder head.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the engine is cool and disconnect the battery.
Place drain pan under the vehicle to catch any coolant.

2. Locate the Leak

Inspect Components: Visually check the coolant reservoir, radiator, hoses, and water pump for visible leaks.
Pressure Test: If no leaks are visible, use a pressure tester to pressurize the cooling system and observe for leaks.

3. Repair or Replace Affected Parts

If the Coolant Reservoir is Cracked:
- Remove the reservoir by disconnecting hoses and securing clips.
- Install a new coolant reservoir and reconnect hoses.
If the Radiator is Damaged:
- Drain the coolant from the radiator.
- Disconnect the upper and lower radiator hoses, transmission cooler lines (if applicable), and any mounting brackets.
- Remove the old radiator and install a new one, reconnecting all hoses and lines.
If Hoses are Leaking:
- Loosen the hose clamps and remove the damaged hoses.
- Install new hoses, ensuring proper alignment, and tighten the clamps.
If the Water Pump is Leaking:
- Drain the coolant from the system.
- Remove the serpentine belt and any accessories obstructing the water pump.
- Unbolt and remove the water pump.
- Clean the mounting surface and install a new water pump with a new gasket.
- Reassemble all components in reverse order.

4. Refill Coolant

Refill the cooling system with the appropriate type and mixture of coolant.
Bleed the cooling system to remove any air pockets.