Technical Service Bulletin SSM 51799 — 2021 FORD BRONCO SPORT
ENGINE AND ENGINE COOLING
Bulletin Details
| TSB ID | SSM 51799 |
| Manufacturer | |
| Vehicle | 2021 FORD BRONCO SPORT |
| Component | ENGINE AND ENGINE COOLING |
| Communication Date |
Bulletin Summary
Some 2020-2023 Escape and 2021-2023 Bronco Sport vehicles equipped with the 1.5L engine may exhibit a lugging vibration and/or boom noise while driving in gears 5-8 at approximately 1500 engine revolutions per minute (RPM). This may be felt more when the engine is under a light to moderate load. A vibration and/or boom noise could be generated from the firing frequency of the 3 cylinders or when cylinder deactivation occurs and the engine is running on 2 cylinders. This condition is more noticeable when the vehicle is driven in ECO mode. This mode was designed to deliver maximum fuel efficiency and increase the driving range.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2021 FORD BRONCO SPORT
TSB 25-2428
ENGINE
24N08 -S1
UNKNOWN OR OTHER
TSB 25-2001
UNKNOWN OR OTHER
SSM 52704
UNKNOWN OR OTHER
22N15
EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
TSB 23-2298
EQUIPMENT
SSM 51823
UNKNOWN OR OTHER
SSM 51812
STEERING
SSM 51799
POWER TRAIN
SSM 51724
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM