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 MANUALSFORD2021TRANSIT-350 HD BASE, VAN CARGO EXTENDED, 3.5L ENG VIN 8, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 181 (EXTERIOR LIGHTING (2 OF 2))
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWD
Section 181 (Exterior Lighting (2 Of 2))
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWDSECTION Section 181 (Exterior Lighting (2 Of 2))
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
- Diagnosis And Testing
- Reversing Lamps
- Spot Lamps
- Stoplamps
- BCM
- BCMB (Auxiliary Lighting Control Module [ALCM])
- Symptom Chart(s)
- Pinpoint Tests
- Notes
- Pinpoint Test A : All The STOPLAMPS Are Inoperative
- Pinpoint Test B : The High Mounted STOPLAMP Is Inoperative
- Pinpoint Test C : An Individual Rear STOPLAMP Is Inoperative - Vehicles Without A Pickup Bed
- Pinpoint Test D : An Individual Rear Upper STOPLAMP Is Inoperative - Incandescent Rear Lamps
- Pinpoint Test E : An Individual Rear Lower STOPLAMP Is Inoperative - Incandescent Rear Lamps
- Pinpoint Test F : An Individual Rear STOPLAMP Is Inoperative - Led (Light Emitting Diode) Rear Lamps
- Pinpoint Test G : One Or More STOPLAMPS Are On Continuously
- Trailer Lamps
- BCM
- TRM
- Symptom Chart
- Pinpoint Tests
- Notes
- Pinpoint Test A : All The Trailer Lamps Are Inoperative
- Pinpoint Test B : One Or More Trailer Stop/Turn Lamps Are Inoperative Or Always On - Vehicles Not Equipped With A TRM (Trailer Module)
- Pinpoint Test C : One Or More Trailer Stop/Turn Lamps Are Inoperative Or Always On - Vehicles Equipped With A TRM (Trailer Module)
- Pinpoint Test D : The Trailer Parking Lamps Are Inoperative Or Always On
- Pinpoint Test E : The Trailer Reversing Lamps Are Inoperative Or Always On
- Pinpoint Test F : The Trailer Battery Charging Is Inoperative/Does Not Operate Correctly - Vehicles Not Equipped With A TRM (Trailer Module)
- Pinpoint Test G : The Trailer Battery Charging Is Inoperative/Does Not Operate Correctly - Vehicles Equipped With A TRM (Trailer Module)
- Pinpoint Test H : U0140:00
- Turn Signal and Hazard Lamps
- BCM
- BCMB (Auxiliary Lighting Control Module [ALCM])
- DDM
- PDM
- SCCM
- Symptom Chart(s)
- Pinpoint Tests
- Notes
- Pinpoint Test A : The Turn Signal Function Is Inoperative Or Always On
- Pinpoint Test B : One Front Turn Signal Lamp Is Inoperative Or Always On - Halogen Headlamps
- Pinpoint Test C : One Front Turn Signal Lamp Is Inoperative Or Always On - Led (Light Emitting Diode) Headlamps
- Pinpoint Test D : One Exterior Mirror Turn Signal Lamp Is Inoperative Or Always On
- Pinpoint Test E : The Hazard Lamp Function Is Inoperative Or Always On
- Pinpoint Test F : The Turn Signal Indicator Flashes Fast When No Turn Signal Lamps Are Inoperative Or Does Not Flash Fast When A Turn Signal Lamp Is Inoperative - Led (Light Emitting Diode) Headlamps Or Rear Lamps
- Pinpoint Test G : The Turn Signal Indicator Flashes Fast When No Turn Signal Lamps Are Inoperative - Halogen Headlamps Turn Signal Lamp
- General Procedures
- Removal And Installation
- Notes
- Cab Marker Lamp
- Front Fog Lamp
- Front Marker Lamp
- Front Turn Signal Lamp Bulb
- Hazard Flasher Switch
- Headlamp Assembly
- Headlamp Bulb
- Headlamp Switch
- High Mounted Stoplamp
- Light Emitting Diode (LED) Control Module
- Light Sensor
- Rear Lamp Assembly
- Rear Lamp Bulb
- Side Marker Lamp
- Spot Lamp Control Module
- Spot Lamp Switch
- Stoplamp Switch
- Trailer Module (TRM)
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.