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NHTSA ID Number: 10181937
Manufacturer Communication Number: TSB 20-2374
Summary
Some 2019-2020 Ranger vehicles may exhibit random Trailer Connected/Disconnected messages in the instrument panel cluster (IPC) message center when no trailer is connected. This may be caused by corrosion and/or moisture in C4098 (4-pin trailer tow connector), C4099(4/7 way trailer tow connector), and/or inline C405. To correct the condition, follow the Service Procedure steps to inspect and repair the wiring and reprogram the trailer module (TRM).
Model:
2019-2020 Ranger
Issue: Some 2019-2020 Ranger vehicles may exhibit random Trailer Connected/Disconnected messages in the instrument panel cluster (IPC) message center when no trailer is connected. This may be caused by corrosion and/or moisture in C4098 (4-pin trailer tow connector), C4099 (4/7-way trailer tow brake electrical connector) and/or inline C405. To correct the condition, follow the Service Procedure steps to inspect and repair the wiring and reprogram the trailer module (TRM).
Action: Follow the Service Procedure steps to correct the condition on vehicles that meet all of the following criteria:
- 2019-2020 Ranger
- Trailer Connected/Disconnected message in the IPC message center when no trailer is connected
NOTE: Part quantity refers to the number of that service part number required, which may be different than the number of individual pieces. Service part numbers contain 1 piece unless otherwise stated. “As Needed” indicates the part is required but the number may vary or is not a whole number; parts can be billed out as non-whole numbers, including less than 1.
Parts
| Description | Quantity | Part Number |
| Wiring Harness – Refer To The Parts Catalog For The VIN Specific Application | 1 | 14405 |
| Rear Bumper Wiring Harness – Refer To The Parts Catalog For The VIN Specific Application | 1 | 15K868 |
| Pigtail Wiring Kit | 1 | 5U2Z-14S411- JA |
| Trailer Tow Brake Electrical Connector | 1 | FU5Z-14489-A |
| Rear Wiring Harness (Without Rear Bumper) | 1 | KB3Z- 13A576-C |
| Motorcraft® Electrical Grease | As Needed | XG-12  |
Service Procedure
- Reprogram the TRM using the latest software level of the appropriate Ford diagnostic scan tool.
- For vehicles equipped with a 4-pin trailer tow connector, proceed to Step 3. For vehicles equipped with a 4/7-way trailer tow connector mounted in the bumper, proceed to Step 7.
- Inspect connector C405 for corrosion. Is corrosion present?
(1). Yes – proceed to Step 4.
(2). No – proceed to Step 5.
- Replace the wiring harness(es) of the affected connector(s) and apply Motorcraft® Electrical Grease to the terminals and reconnect C405.
(1). When replacing the 15K868 harness, the 4-pin trailer tow connector on the new harness assembly is to be cut approximately 15 cm (6 inches) from the 4-pin trailer tow connector end. The cut-off 4-pin trailer tow connector should then be soldered onto the new harness using recommended splicing method 1 or 2 as shown in the Wiring Diagram, Cell 005, pages 5 or 6. Repair is complete.
NOTE: Do not use the butt splices provided with the service pigtail kit.
NOTE: Soldering the pigtail and using the dual wall heat shrink tubing will prevent moisture from migrating through the harness.
- Thoroughly dry connector C405 of any moisture and apply Motorcraft® XG-12 Electrical Grease to the terminals and reconnect C405.
- Replace C4098 with the service pigtail using recommended splicing method solder 1 or 2 as shown in the Wiring Diagram, Cell 005, pages 5 or 6. Repair is complete.
NOTE: Do not use the butt splices provided with the service pigtail kit.
NOTE: Soldering the pigtail and using the dual wall heat shrink tubing will prevent moisture from migrating through the harness.
- Inspect the trailer side connection terminals of the 4/7-way trailer tow connector mounted in the bumper for corrosion. Is there corrosion present?
(1). Yes – proceed to Step 8.
(2). No – proceed to Step 9.
- Replace the 4/7-way trailer tow connector.
- Inspect connectors C405 and C4099 for corrosion. Is corrosion present?
(1). Yes – replace the affected harness(es), apply Motorcraft® Electrical Grease to the terminals and reconnect C405 and C4099.
(2). No – thoroughly dry connectors C405 and/or C4099, apply Motorcraft® Electrical Grease to the terminals and reconnect C405 and C4099.
2 Affected Products
Vehicle
| MAKE | MODEL | YEAR |
| FORD | RANGER | 2019-2020 |
1 Associated Document
Manufacturer Communications
20-2374
27 October 2020
https://www.nhtsa.gov/recalls?nhtsaId=10181937
MC-10181937-0001.pdf 116.315KB
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Last update on 2024-07-07 / Affiliate links / Images from Amazon Product Advertising API
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Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty (SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are not altered by a TSB. NVLW/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool. Labor Times Description Operation No. Time MT: 2019-2020 Ranger: Reprogram The TRM, Inspect And Repair Or Replace Wire Harness(es) Following The Service Procedure MT202374 Actual Time Repair/Claim Coding Causal Part: 15K868 Condition Code: X4
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