# Service bulletin SSM 50296

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10204036
- Published by NHTSA: 2021\-12\-07
- Manufacturer's number: SSM 50296
- Manufacturer's date: 2021\-11\-17
- NHTSA component: SERVICE BRAKES

## NHTSA's summary

Some 2021 Ranger and Bronco vehicles built on 15\-Jun\-2021 and through 15\-Aug\-2021 may exhibit an illuminated anti\-lock brake system \(ABS\) warning indicator lamp with diagnostic trouble codes \(DTC\) C003A, C0036, C0037, and/or C0039 stored in the ABS control module. This may be due to damage or movement of the ABS tone ring on the rear axle. Remove the ABS sensor and inspect the rear ABS tone ring for damage or movement from its original position. If movement or damage has occurred, refer to Workshop Manual \(WSM\), Section 205\-02 to complete the service procedure for axle shaft replacement. If no movement has occurred, refer to WSM, Section 206\-09 for normal diagnostics.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204036-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204036-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Brakes

## Trouble codes named

C0036, C0037, C0039, C003A

## Vehicles listed

- 2021 FORD BRONCO
- 2021 FORD RANGER

## Recalls for the same vehicles and component

- [2025553](/recalls/tc/2025553.md), 2025-10-11: Brakes

## Other bulletins for the same vehicles and component

- [SSM 55240](/bulletins/11038445.md), 2026-10-13, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER; SERVICE BRAKES. Some 2021\-2024 Bronco vehicles may exhibit an illuminated red brake warning indicator with diagnostic trouble code \(DTC\) C0049:01 stored in the anti\-lock brake system \(ABS\) module. This may be due to pin fitment at the brake fluid level sensor connector. To resolve this concern, replace the brake fluid reservoir and replace the brake fluid level sensor electrical connector C1052 with service pigtail wiring kit 3U2Z\-14S411\-BXAB. For claiming, use causal part 2L210 and labor operations 2140A and 2219D45WR.
- [SSM 54431](/bulletins/11026520.md), 2025-12-10, Service bulletin: SERVICE BRAKES. Some 2021\-2024 Bronco vehicles may exhibit an illuminated red brake warning indicator with diagnostic trouble code \(DTC\) C0049:01 stored in the anti\-lock brake system \(ABS\) module. Replace the brake fluid reservoir and the brake fluid level sensor electrical connector. Do not disconnect the brake fluid level sensor electrical connector, cut the connector 3\-4 inches \(75\-100 mm\) from the connector end and leave the brake fluid level sensor electrical connector attached to brake fluid reservoir. Include these parts in the same package when returning warranty replacement brake fluid reservoirs. The brake fluid reservoir with the electrical connector still connected should be packaged in the original box to protect it during shipping. For claiming, use causal part 2L210 and labor operations 2140A and 2219D45WR.
- [SSM 54362](/bulletins/11025491.md), 2025-11-12, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Some 2021\-2025 Bronco vehicles may exhibit an illuminated red brake warning indicator with diagnostic trouble code \(DTC\) C0049:01 stored in the anti\-lock brake system \(ABS\) module. Replace the brake fluid reservoir and the brake fluid level sensor electrical connector. Do not disconnect the brake fluid level sensor electrical connector, cut the connector 3\-4 inches \(75\-100 mm\) from the connector end and leave the brake fluid level sensor electrical connector attached to brake fluid reservoir. Include these parts in the same package when returning warranty replacement brake fluid reservoirs. The brake fluid reservoir with the electrical connector still connected should be packaged in the original box to protect it during shipping. For claiming, use causal part 2L210 and labor operations 2140A and 2219D45WR.
- [TSB 23\-2162](/bulletins/10237784.md), 2023-06-16, Service bulletin: PARKING BRAKE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY:VEHICLE CONTROLS:STEERING; PARKING BRAKE:ELECTRICAL:SWITCH. Some 2021\-2022 Bronco vehicles built on or before 18\-Sept\-2022 may exhibit a broken parking brake switch. The original parking brake switch design is no longer available. For vehicles within this build date that require parking brake switch replacement, follow the Service Procedure to install a steering column opening cover which will come with a new and improved parking brake switch design.
- [SSM 51261](/bulletins/10228876.md), 2023-01-06, Service bulletin: SERVICE BRAKES. Some Ford and Lincoln vehicles may exhibit noise when the brakes are applied. When diagnosing and repairing brake noise conditions, use the Workshop Manual \(WSM\) and the appropriate pinpoint test in section 206\-00. The brake rotors should only be machined if directed by the WSM because one or more of the following conditions are present on the braking surface: scoring, excessive corrosion/rust or pitting, bluing/discoloration and/or heat spots. For additional information, refer to WSM section 206\-00.
- [SSM 51227](/bulletins/10228842.md), 2023-01-05, Service bulletin: SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES; ENGINE AND ENGINE COOLING. Some 2021\-2023 Bronco vehicles equipped with a 2.7L or 3.0L EcoBoost engine may exhibit noises coming from the brake pedal while applying and/or releasing the brake pedal or while the vehicle is off without brake pedal application. A single click and/or clunk may be heard during brake pedal application and again on brake pedal release and is considered normal. Clicking may also be heard while the vehicle is off, and without the brake pedal being applied. The clicking heard with the vehicle off is due to the EBB going through the normal shut\-down process. The amount of noise will vary between EBB modules and replacement of the EBB module is not expected to reduce the noises.
- [SSM 51120](/bulletins/10222788.md), 2022-10-11, Service bulletin: SERVICE BRAKES, HYDRAULIC. Some Ford and Lincoln vehicles may exhibit noise when the brakes are applied. When diagnosing and repairing brake noise conditions, use the Workshop Manual \(WSM\) and the appropriate pinpoint test in section 206\-00. The brake rotors should only be machined if directed by the WSM because one or more of the following conditions are present on the braking surface: scoring, excessive corrosion/rust or pitting, bluing/discoloration and/or heat spots. For additional information, refer to WSM section 206\-00.
- [TSB 22\-2360](/bulletins/10222195.md), 2022-09-30, Service bulletin: SERVICE BRAKES, AIR:ANTILOCK. This article supersedes TSB 22\-2210 to update the expected release date of the revised ABS module software. Customers who neutral \(4\-wheel flat\) tow 2021\-2022 Broncos equipped with an electronic brake booster \(EBB\) may report an inconsistent brake assist when a supplemental braking system has been installed. This may result from supplemental brake system set\-up that does not account for the Broncos EBB system entering sleep mode \(via the ABS module\) after a pre\-determined period of time following vehicle shut\-down. This functionality is necessary to prevent battery drain. Enhanced software is under development to address this condition when the vehicle enters Neutral Tow mode. The new software is expected to be available in December 2022. Monitor OASIS for updates. Until the software becomes available, customers who meet this criteria may perform the procedures below to address this condition when neutral \(4\-wheel flat\) towing their vehicle.
- [TSB 22\-2354](/bulletins/10220384.md), 2022-09-23, Service bulletin: ELECTRONIC STABILITY CONTROL \(ESC\); SERVICE BRAKES, HYDRAULIC. Some 2021\-2022 Bronco vehicles equipped with a 2.7L or 3.0L EcoBoost engine may exhibit an illuminated anti\-lock brake system \(ABS\) indicator and stability\-traction control indicator, and diagnostic trouble code \(DTC\) C1013:09 stored in the ABS module. This may be due to ABS module software. To correct the condition, follow the Service Procedure to update the ABS module software.
- [TSB 22\-2353](/bulletins/10220383.md), 2022-09-23, Service bulletin: PARKING BRAKE. Some 2021\-2022 Bronco vehicles equipped with a 2.7L or 3.0L EcoBoost engine may exhibit multiple error messages displayed in the IPC followed by automatic engagement of the parking brake immediately after starting the vehicle with the doors removed or after sitting in the vehicle for an extended period of time with the vehicle off. This may be due to the software within the anti\-lock brake \(ABS\) module. To correct the condition, follow the Service Procedure to reprogram the ABS module.

JSON: [/v1/bulletins/10204036](/v1/bulletins/10204036)

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