# Service bulletin SSM 49545

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: 10187935
- Published by NHTSA: 2021\-03\-03
- Manufacturer's number: SSM 49545
- Manufacturer's date: 2021\-02\-04
- NHTSA component: EQUIPMENT ADAPTIVE/MOBILITY

## NHTSA's summary

Some 2020 Escape, 2020\-2021 Corsair, 2021 Bronco Sport and 2021 Mustang Mach\-E vehicles may exhibit DTC C1B00:62 present in the PSCM with any of the following messages displayed: Service Advance Trac, Hill Start Assist Not Available, Lane Keeping Sys. Malfunction Service Required, or Pre\-Collision Assist Not Available. This may be due to a disconnected or discharged battery, recent PSCM or anti\-lock brake system \(ABS\) module reprogram or configuration, or loss of ABS communication to the PSCM. The Workshop Manual pinpoint test is in the process of being updated and replacement of the electronic power assist steering \(EPAS\) column is not necessary. To clear the DTC, drive the vehicle straight for 30 seconds at speeds over 50 km/h \(30 mph\). Cycle the ignition on/off once complete. For claiming use causal part 3C529.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187935-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187935-9999.pdf)

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

## Components

Equipment and accessories

## Trouble codes named

C1B00

## Vehicles listed

- 2021 FORD BRONCO SPORT
- 2020 FORD ESCAPE
- 2020 to 2021 LINCOLN CORSAIR

## Recalls for the same vehicles and component

- [25V685000](/recalls/nhtsa/25V685000.md), 2025-10-10: EQUIPMENT:ELECTRICAL:ENGINE BLOCK HEATER
- [24V852000](/recalls/nhtsa/24V852000.md), 2024-11-08: EQUIPMENT:OTHER:LABELS

## Other bulletins for the same vehicles and component

- [SSM 52476](/bulletins/10254138.md), 2024-05-03, Service bulletin: EQUIPMENT. All accessory stick\-on keyless entry keypads come with a wallet card containing the master code. If the accessory keypad was factory installed, this card will be placed in the glove box and should be handed to the vehicles owner during initial delivery. Unlike the integrated \(wired\) factory keypad, the accessory keypad master code cannot be retrieved from the vehicle using a diagnostic scan tool. If the wallet card for an accessory keypad is lost, follow these steps to recover the code. Dealer Key Code access is granted through the Dealer Program Enrollment System \(DPES\); dealership management can authorize users. The authorized user must go to FMCDealer.com \> Parts and Service \> Parts Product Line Information \> Keys/Entry Devices \> Aftermarket Keyless Entry Keypad Code Access. Follow the instructions on the screen to obtain the master code for the accessory keypad.
- [22N15](/bulletins/10252410.md), 2024-04-02, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Customer Satisfaction Program 22N15 Certain 2020\-2023 Model Year Bronco Sport, Escape, Corsair, E\-Series, F\-650/F\-750, F\-53 Motorhome Chassis, F\-59 Commercial Stripped Chassis Vehicles Equipped with Smart Data Link Connector \(SDLC\) Gateway Module Reprogramming for Inspection and Maintenance \(I/M\) Testing Adding Not OTA Capable Owner letters. Other documents submitted 01/02/24 \& Received OTA letters submitted on 02/01/24
- [22N15](/bulletins/10248066.md), 2024-01-02, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Certain 2020\-2023 Model Year Bronco Sport, Escape, Corsair, E\-Series, F\-650/F\-750, F\-53 Motorhome Chassis, F\-59 Commercial Stripped Chassis Vehicles Equipped with Smart Data Link Connector \(SDLC\) Gateway Module Reprogramming for Inspection and Maintenance \(I/M\) Testing
- [TSB 23\-2308](/bulletins/10244711.md), 2023-11-02, Service bulletin: SERVICE BRAKES, AIR:DISC:CALIPER; POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:BEARINGS/BUSHINGS; EQUIPMENT. Some 2020\-2023 Escape and 2021\-2023 Bronco Sport vehicles may exhibit a moan noise when the vehicle is driven in reverse \(R\) in cold weather and/or high humidity. This may be due to the suspension sensitivity of the vehicle. To correct this condition, follow the Service Procedure to replace the standard and reinforced rear caliper bushings and apply Kluberpaste to the machined surfaces of the brake caliper and caliper support bracket.
- [TSB 23\-2307](/bulletins/10244707.md), 2023-11-02, Service bulletin: UNKNOWN OR OTHER; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\); ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. Some 2019\-2020 Edge/F\-150/Fusion/Continental/MKZ/Nautilus, 2019\-2021 Mustang/Ranger/Transit Connect, 2020\-2021 EcoSport/Escape/Expedition/Explorer/F\-Super Duty/Aviator/Corsair/Navigator, 2021 Bronco Sport and 2020\-2022 Explorer/Aviator vehicles with SYNC 3 may experience various SYNC performance related concerns. This may be due to the SYNC Software. To correct the condition, follow the Service Procedure to update the SYNC module \(APIM\) software.
- [TSB 23\-2298](/bulletins/10243474.md), 2023-10-03, Service bulletin: EQUIPMENT; STRUCTURE:BODY:HATCHBACK/LIFTGATE. Some 2021\-2023 Bronco Sport vehicles equipped with a 1.5L engine built on 24\-Jul\-2021 and through 31\-Aug\-2023 may exhibit a hissing noise from rear liftgate area when driving straight between 35\-50 MPH \(56 80 Km/h\). This may be due to the absence of the rear floor insulator located in the spare tire compartment. To correct this condition, follow the Service Procedure to install a rear floor insulator in the spare tire compartment.
- [SSM 51874](/bulletins/10241597.md), 2023-09-02, Service bulletin: EQUIPMENT; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Some 2021\-2023 Bronco Sport and 2020\-2023 Escape vehicles may exhibit a rattle or flapping noise coming from the rear air extractors while driving. This may be due to the normal operation of the rear air extractors. To determine if this is a normal condition, perform a road test at 40 mph \(65 km/h\) or above. Inspect if the noise is coming from the rear extractors. During the road test alternate air conditioning \(A/C\) between fresh mode and air re\-circulation mode. If the noise is eliminated when the A/C is in fresh mode, this is considered a normal characteristic of the vehicle and no repairs should be performed.
- [SAN\-Vol1 I1](/bulletins/10240743.md), 2023-08-16, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. The Service Awareness Newsletter is an informal communication that contains information that may not be presently available in a TSB, SSM, GSB, or other electronic communication. This article includes information on warranty, technical service tips and other service information.
- [SSM 51823](/bulletins/10240577.md), 2023-08-11, Service bulletin: UNKNOWN OR OTHER; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN. Some 2019\-2023 Edge/Nautilus, 2020\-2023 Escape/Corsair, 2021\-2023 Bronco Sport, 2022\-2023 Maverick vehicles equipped with all wheel drive \(AWD\) may exhibit chatter/shudder during low speed turning events. This may be due to fluid contamination in the rear drive unit \(RDU\). Drain and refill the RDU, refer to Workshop Manual Section \(WSM\) 205\-02. Drive for 5 miles \(8 km\) in stop and go conditions with right and left turns and re\-evaluate. If the issue is still present, continue with normal WSM diagnostics. For claiming, use base \(4000\) causal part.
- [SSM 51778](/bulletins/10239099.md), 2023-07-20, Service bulletin: EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS; BACK OVER PREVENTION:SOFTWARE. Some 2020\-2021 Escape built on/before 23\-Nov\-2021, 2021 F\-150 built on/before 08\-Oct\-2021, 2021 Mustang Mach\-E built on/before 29\-Mar\-2021, 2021 Expedition built on/before 05\-Aug\-2021, 2021 Explorer built on/before 27\-Sep\-2021 and 2020\-2022 Edge may exhibit a concern of the audio system does not power on, no sound from audio speakers, chimes default to coming through the instrument cluster, no communication with audio control module \(ACM\) or digital signal processor \(DSP\) module, and/or diagnostic trouble code \(DTC\) U0184, U0237 and/or U0238. To correct the condition, perform a hard reset of the DSP by disconnecting the 12\-volt battery. Reprogram the DSP module using the latest version of the appropriate Ford diagnostic scan tool. For claiming, use causal part 18B849 and any applicable labor operations in Section 10 of the Service Labor Time Standards Manual.

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