WenmarOpen by Wenmar Pro

Service bulletins for the 2021 Ford Bronco

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.

322 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Brakes are shown. Show all

Bulletins, newest first
SSM 552402026-10-13. 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 544312025-12-10. 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 543622025-11-12. 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 23-21622023-06-16. 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 512612023-01-06. 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 512272023-01-05. 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 511202022-10-11. 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 22-23602022-09-30. 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 22-23542022-09-23. 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 22-23532022-09-23. 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.
SSM 509512022-07-29. Service bulletin. SERVICE BRAKES. Some 2021-2022 Bronco vehicles equipped with an EBB 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. The issue will resolve itself once the brake pedal is no longer depressed or the parking brake is manually disengaged. This may be due to the software within the anti-lock brake (ABS) module. This issue can be avoided by placing the vehicle in accessory mode for a few seconds before starting the engine. Engineering is working on improved software to correct this condition that will be available in November 2022. No repairs should be made in attempt to correct this condition. Monitor OASIS for updates.
TSB 22-22552022-07-01. Service bulletin. BACK OVER PREVENTION:SOFTWARE; SERVICE BRAKES. Some 2021-2022 Bronco vehicles built on or before 14-Mar-2022 and equipped with a 2.7L engine may exhibit the inability to disable the traction control system using the traction control on/off switch located on the instrument panel. This may be due to the software within the anti-lock brake system (ABS) module. To correct the condition, follow the Service Procedure and update the ABS software.
TSB 22-22102022-05-31. Service bulletin. SERVICE BRAKES. 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 Bronco's 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 September 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.
SSM 507132022-05-03. Service bulletin. SERVICE BRAKES. Some 2021-2022 F-150/Bronco and 2022 Expedition/Navigator vehicles may exhibit an illuminated anti-lock brake system (ABS) indicator and stability-traction control indicator when ambient temperatures are below freezing, and diagnostic trouble code (DTC) C1013:09 stored in the ABS module. This may be due to ABS module software parameters and the effects of low ambient temperature on brake fluid viscosity. This condition does not affect brake system hydraulic functionality. Clear the DTC to restore ABS and stability-traction control functionality and inform customers that Ford is developing a software update which will be delivered to the vehicle via an over-the-air (OTA) ABS update in November 2022 to prevent this condition.
TSB 22-20942022-03-22. Service bulletin. EQUIPMENT; PARKING BRAKE:ELECTRICAL. Some 2021-2022 Bronco vehicles equipped with parking aid sensors may exhibit a park aid system that does not remain deactivated after the vehicle has been off for more than 5 minutes. The vehicle may exhibit false alerts from the parking aid warning system which may cause it to activate while driving or towing or due to the presence of a winch. This may be due to the software within the instrument panel cluster (IPC). To correct the condition, follow the Service Procedure and update the IPC software.
SSM 503142021-12-07. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES. Some 2021 Bronco vehicles equipped with the 2.3L engine may exhibit a red brake warning lamp and/or brake system warning message in the instrument panel cluster (IPC) with a diagnostic trouble code (DTC) P050F in the anti-lock brake system (ABS) module and a firm brake pedal. This may be due to contamination in a brake booster vacuum line. To correct this condition, replace the vehicle's vacuum hose (MB3Z-2420-A). Refer to Workshop Manual (WSM), Section 206-09 for installation instructions. For claiming, use casual part 2420.
SSM 502962021-12-07. Service bulletin. SERVICE BRAKES. 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.
SSM 500642021-09-04. Service bulletin. SERVICE BRAKES, ELECTRIC:SOFTWARE/PROGRAMMING. Some 2013-2021 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 499202021-08-02. Service bulletin. ELECTRICAL SYSTEM; PARKING BRAKE:ELECTRICAL; EQUIPMENT. Some 2021 Bronco vehicles equipped with front and rear parking aid sensors may set diagnostic trouble codes (DTCs) for all 8 parking aid sensors/circuits if 2 or more rear parking aid sensors/circuits have a concern. This is due to the software within the parking aid module (PAM), and module replacement will not resolve this condition. If the PAM sets DTCs for all 8 parking aid sensors/circuits, diagnose the rear parking aid sensor and circuit DTCs first. Reference Workshop Manual (WSM), Section 413-13A for parking aid diagnostic information. Ford is currently working on a software update that is expected to be available August 2021. The customer can continue to drive the vehicle and schedule a follow-up appointment for October, when software is expected to be available. Follow up with the customer to confirm the appointment once OASIS confirms software availability.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.