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.
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HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 345 (FOUR-WHEEL DRIVE SYSTEMS (1 OF 2))
2021 Ford Edge SE, 4WD
Section 345 (Four-Wheel Drive Systems (1 Of 2))
2021 Ford Edge SE, 4WDSECTION Section 345 (Four-Wheel Drive Systems (1 Of 2))
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Description And Operation
- Four-Wheel Drive Systems - Overview
- Four-Wheel Drive Systems - System Operation and Component Description
- Four-Wheel Drive Systems - Raptor - System Operation and Component Description
- Diagnosis And Testing
- Four-Wheel Drive Systems - Vehicles With: 2-Speed Torque On Demand Transfer Case
- Inspection and Verification
- TCCM
- Symptom Chart: Four-Wheel Drive Systems
- Symptom Chart -- NVH
- Pinpoint Tests
- Pinpoint Test A : DTC U300D:11
- Pinpoint Test B : DTCS P0562:00, P0563:00
- Pinpoint Test C : The Front Axle Does Not Engage/Disengage Correctly
- Pinpoint Test D : Four-Wheel Drive (4WD) System Functional Test
- Pinpoint Test E : P1812:00, P1815:00
- Pinpoint Test F : U0100:00
- Pinpoint Test G : U0121:00:00
- Pinpoint Test H : U0140:00
- Pinpoint Test I : DTC U0101:00
- Pinpoint Test J : The Front Axle Makes Grinding / Clicking / Ratcheting In 2H Mode Only
- Pinpoint Test K : P1825:00, P1826:00 And P1827:00
- Pinpoint Test L : P1839:00, P1840:00 And P1841:00
- Pinpoint Test M : DTC'S 1849:00, 1853:00, 1857:00, 1861:00, P1867:00 And 1891:00
- Four-Wheel Drive Systems - Vehicles With: 2-Speed Torque On Demand Transfer Case
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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.