Technical Service Bulletin 0809423 — 2020 JEEP GRAND CHEROKEE
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | 0809423 |
| Manufacturer | |
| Vehicle | 2020 JEEP GRAND CHEROKEE |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin Summary
Flash: Radio Frequency Hub Module (RFHM) Updates The customer may describe that they heard about these vehicles that can be unlawfully driven away by thieves when they are able to program new key fobs through the RFHM. Software enhancement include: ? Update to the RFHM software to prevent hackers from programming their own key fob to the vehicle. ? This is intended to deter an unwanted drive off of the vehicle without the customers knowledge.
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 2020 JEEP GRAND CHEROKEE
21-009-25 REV.A
POWER TRAIN
9100494
FUEL/PROPULSION SYSTEM
21-039-24 REV. A
POWER TRAIN
0821422
EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
0000122
EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
0000122
UNKNOWN OR OTHER
2103322
ELECTRICAL SYSTEM
2103322
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
2102622
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
2102622
POWER TRAIN