Category: Diagnostic Tips

Headlight Leveler System Information – 2019 Subaru Forester

NHTSA ID Number: 10165504 Manufacturer Communication Number: 10-179-19 Summary This Service Information Bulletin provides a procedure to “reset” the headlight leveler system. After an affected vehicle is transported on a flatbed or other type of carrier, the headlight beam adjustment may become either too high or too low. During normal operation, system sensors measure inclination of the road surface in comparison to …

DTC P0400-Reprogramming File Availability – 2015-2018 Subaru

NHTSA ID Number: 10171917 Manufacturer Communication Number: 11-197-20 Summary This bulletin announces availability of reprogramming files to optimize the Engine Control Module (ECM). These new files address concerns of the check engine light coming on and setting a DTC P0400: EGR “A” FLOW. The DTC can set if the ECM tests the EGR system when ambient / intake air temperatures are below …

DTCs P219C, D, E or F- ECM Reprogramming File Availability – 2019-2020 Subaru Crosstrek Hybrid (PHEV)

NHTSA ID Number: 10171918 Manufacturer Communication Number: 11-198-20 Summary This bulletin announces availability of reprogramming files to optimize the engine’s electronic control module (ECM). These new files address concerns of the check engine light coming on and setting any of the following DTCs for Air-Fuel Ratio Imbalance: P219C, P219D, P219E or P219F. The ECM parameters for air-fuel (A/F) calculation have been revised.

Reprogramming File Availability for Startability and Idle Stability at Low Temperatures – 2014-2018 Subaru Forester & 2015-2020 WRX 2.0L DIT

NHTSA ID Number: 10171919 Manufacturer Communication Number: 11-199-20 Summary This bulletin announces availability of reprogramming files to optimize the Engine Control Module (ECM). The new logic will address isolated concerns of a hard start condition occurring in cold weather (+10 degrees Fahrenheit or lower) and / or high-altitude areas. When this scenario occurs, the A/F learning control values move toward lean.

Inaccurate Tire Pressures Displayed in Combination Meter – 2017-2018 Subaru Impreza & 2018 Crosstrek

NHTSA ID Number: 10169853 Manufacturer Communication Number: 07-129-18R Summary “This bulletin announces availability of reprogramming files to optimize operation of the Tire Pressure Monitor System’s (TPMS) real-time display function. Under certain high-altitude conditions, the tire pressure values displayed in the combination meter may not be accurate. NOTE: The TPMS Real Time display is independent of the actual TPMS function. Should an actual …

Airbag Control Module- Replacement Parts Procedure Change – 2015-2017 Subaru Legacy & Outback

NHTSA ID Number: 10169858 Manufacturer Communication Number: 07-163-19 Summary “This Service Information Bulletin announces IMPORTANT changes to the parts ordering and Service Procedures for replacement passenger airbag modules and airbag control modules used in the models listed above. The change is due to discontinuation of the original equipment passenger airbag module assemblies used in 2015-17MY vehicles. The replacement passenger airbag module assemblies …

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