Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 141 (ENGINE COOLING SYSTEM)DIAGNOSIS AND TESTINGENGINE COOLINGPINPOINT TESTSPINPOINT TEST C: THE ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURETESTING
2010 Mercury Mariner Hybrid, AWD
Pinpoint Test C: The Engine Does Not Reach Normal Operating Temperature: Testing
2010 Mercury Mariner Hybrid, AWDSECTION Testing
WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
- C1 CHECK THE ENGINE TEMPERATURE
- Key in START position.
Start the engine and allow the engine to idle for 10 minutes.
- Key in OFF position.
Feel the upper and lower radiator hoses.
- Are the upper and lower radiator hoses cold?
- Yes : CARRY OUT the Thermostat component tests.
- No : REFER to INSTRUMENT CLUSTER for diagnosis and testing of the engine coolant temperature gauge.
- Key in START position.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.