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 MANUALSFORD2021TRANSIT-350 HD BASE, VAN CARGO EXTENDED, 3.5L ENG VIN 8, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 604 (LANE KEEPING SYSTEM)DIAGNOSIS AND TESTINGLANE KEEPING SYSTEMSYMPTOM CHART(S)
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWD
Symptom Chart(s)
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWDSECTION Symptom Chart(s)
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
| Condition | Action |
|---|---|
| A module does not communicate with the diagnostic scan tool | GO to Pinpoint Test BO |
| The lane keeping aid or lane keeping alert does not turn on or activate | GO to Pinpoint Test A |
| The lane keeping aid or lane keeping alert does not provide driver feedback once activated | GO to Pinpoint Test B |
| The display lines in the IPC do not turn green after the Lane Keeping System is turned on | GO to Pinpoint Test BP |
| The lane keeping aid or lane keeping alert provides early feedback on one side of the lane and late feedback on the other side of the lane | GO to Pinpoint Test BQ |
| Degraded performance from the lane keeping aid or lane keeping alert system | GO to Pinpoint Test BQ |
| LANE KEEPING SYSTEM MALFUNCTION - SERVICE REQUIRED message in the IPC | GO to Pinpoint Test BR |
| IPMA CAMERA TEMPORARILY NOT AVAILABLE message in the IPC | GO to Pinpoint Test BS |
| IPMA CAMERA LOW VISIBILITY - CLEAN SCREEN message in the IPC | GO to Pinpoint Test BT |
| IPMA CAMERA MALFUNCTION - SERVICE REQUIRED message in the IPC | GO to Pinpoint Test D |
| The lane keeping aid and lane keeping alert will not turn off | GO to Pinpoint Test BU |
RENDER: 1.0x
NO RELATED
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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.