why does my Ford Explorer have low coolant levels?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

473 words

Problem Statement

Learn how to diagnose and fix low coolant levels in 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 completely before opening the cooling system to avoid burns.

Symptoms

•Coolant warning light illuminated on the dashboard
•Engine overheating during operation
•Visible coolant puddles under the vehicle
•Sweet smell of coolant inside or around the vehicle
•Fluctuating temperature gauge readings

Diagnostic Steps

1
Inspect the coolant reservoir for cracks or leaks.
2
Check all hoses connected to the radiator and engine for signs of wear or leakage.
3
Examine the radiator for external leaks or damage.
4
Look for signs of coolant in the engine oil (milky appearance).
5
Use a pressure tester to check for leaks in the cooling system.
6
Inspect the water pump for signs of leakage or failure.

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

•Pressure tester
•Socket set
•Screwdrivers
•Hose clamps
•Pliers

Parts Required

•Coolant reservoir (if cracked)
•Replacement hoses (if damaged)
•Radiator (if leaking)
•Water pump (if defective)
•Coolant

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Diagnostic Steps

1
Inspect the coolant reservoir for cracks or leaks.
2
Check all hoses connected to the radiator and engine for signs of wear or leakage.
3
Examine the radiator for external leaks or damage.
4
Look for signs of coolant in the engine oil (milky appearance).
5
Use a pressure tester to check for leaks in the cooling system.
6
Inspect the water pump for signs of leakage or failure.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the engine is cool before starting work.
Disconnect the battery for safety.

2. Inspect and Repair Leaks

Check the Coolant Reservoir:
- Inspect the reservoir for cracks. If damaged, replace it.
- Ensure the cap is sealing properly; replace if necessary.
Inspect Hoses:
- Examine all hoses for cracks or bulges.
- Replace any damaged hoses using a hose clamp and ensure correct fitment.
Inspect Radiator:
- Look for corrosion, holes, or leaks.
- If leaking, remove the radiator and replace it.
- Flush the radiator with a coolant flush solution before installation.
Check the Water Pump:
- Inspect the water pump for any signs of coolant seepage.
- If leaking, remove the old pump (drain coolant first) and install a new water pump, following the manufacturer's torque specifications for the mounting bolts.
Pressure Test System:
- Use a pressure tester to verify the integrity of the cooling system.
- If leaks are found during testing, repair or replace faulty components.

3. Refill Coolant

Mix the proper coolant with distilled water according to the manufacturer's specifications.
Refill the cooling system and bleed any air from the system by running the engine with the radiator cap off until the thermostat opens.