# Service bulletin 0805022REVA

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: 10223810
- Published by NHTSA: 2022\-10\-17
- Manufacturer's number: 0805022REVA
- Manufacturer's date: 2022\-07\-20
- NHTSA component: VISIBILITY; WHEELS; PARKING BRAKE; VEHICLE SPEED CONTROL; STRUCTURE; ELECTRICAL SYSTEM; STEERING; FUEL SYSTEM, GASOLINE

## NHTSA's summary

Flash: Body Control Module \(BCM\) Updates This bulletin involves reprogramming the Body Control Module \(BCM\) with the latestavailable software. Customer may describe various LIN related functions \(steering wheel, center stack, terrain or 4wd\) switchesand/or certain interior lamps not working. Upon further inspection the technician may also observe the following DTCs may have set withouta MIL: U1223\-00 \- Lost Communication with Wireless Charging Pad Module. U121E\-00 \- Lost Communication With Steering Wheel Cruise Control Switch. U1207\-00 \- Lost Communication With Terrain Switch Bank Module. U1191\-00 \- Lost Communication with Switch Bank Module 2. U1153\-00 \- Lost Communication With Windshield Wiper Smart Module. U114F\-00 \- Lost Communication with LIN Overhead Console. U114D\-87 \- Lost Communication with Hands Free Liftgate Module\-Missing Message. U113B\-00 \- Lost Communication With Switch Bank Module. U112D\-00 \- Lost Communication With EVIC Steering Wheel Switches. U1125\-00 \- Lost Communication With LIN ECU 5\- \(Ride Height Switch Module\). U1123\-00 \- Lost Communication With LIN ECU 3\- \(Switch Bank Module Rear Right\). U1122\-00 \- Lost Communication With LIN ECU 2\- \(Switch Bank Module Rear Left\). U1008\-00 \- LIN 1 Bus Steering Column Control Module Electrical Diagnostic. U0231\-00 \- Lost Communication With Rain Sensing Module. In addition, the customer may experience one or more of the following:Fuel Level and Range \(distance to empty\) \(DTE\) will both increase aftersleep cycle. Fuel Level % would increase when parked on a slope. Fuel gauge remains at full for 107 km \(67 miles\) vs. 73 km \(45 miles\). After fueling up with 68 liters \(18.1 gallons\) of fuel, the fuel gauge onlywill read around 1/4 tank and the low fuel lamp is still illuminated. After 10 minutes of driving, the gauge only read around 3/4 tank andthe fuel lamp is still on. Refuel button is pressed for a short duration of 500ms or less at key off,

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10223810-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10223810-9999.pdf)

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

## Components

Body and frame, Brakes, Electrical system, Fuel system, Glass, wipers and mirrors, Steering, Throttle and cruise control, Wheels, Parking brake

## Trouble codes named

U0231, U1008, U1122, U1123, U1125, U112D, U113B, U114D, U114F, U1153, U1191, U1207, U121E, U1223

## Vehicles listed

- 2021 JEEP GRAND CHEROKEE

## Other bulletins for the same vehicles and component

- [S2308000141](/bulletins/10248873.md), 2024-01-16, Service bulletin: PARKING BRAKE. Park Brake Warning Lamp Illuminated and Flashing, Cluster Warning Message to ?Service Park Brake?
- [0805022REVA](/bulletins/10230346.md), 2023-01-17, Service bulletin: ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; WHEELS; STEERING; STRUCTURE; PARKING BRAKE; VEHICLE SPEED CONTROL; VISIBILITY. Flash: Body Control Module \(BCM\) Updates This bulletin involves reprogramming the Body Control Module \(BCM\) with the latestavailable software. Customer may describe various LIN related functions \(steering wheel, center stack, terrain or 4wd\) switchesand/or certain interior lamps not working. Upon further inspection the technician may also observe the following DTCs may have set withouta MIL: U1223\-00 \- Lost Communication with Wireless Charging Pad Module. U121E\-00 \- Lost Communication With Steering Wheel Cruise Control Switch. U1207\-00 \- Lost Communication With Terrain Switch Bank Module. U1191\-00 \- Lost Communication with Switch Bank Module 2. U1153\-00 \- Lost Communication With Windshield Wiper Smart Module. U114F\-00 \- Lost Communication with LIN Overhead Console. U114D\-87 \- Lost Communication with Hands Free Liftgate Module\-Missing Message. U113B\-00 \- Lost Communication With Switch Bank Module. U112D\-00 \- Lost Communication With EVIC Steering Wheel Switches. U1125\-00 \- Lost Communication With LIN ECU 5\- \(Ride Height Switch Module\). U1123\-00 \- Lost Communication With LIN ECU 3\- \(Switch Bank Module Rear Right\). U1122\-00 \- Lost Communication With LIN ECU 2\- \(Switch Bank Module Rear Left\). U1008\-00 \- LIN 1 Bus Steering Column Control Module Electrical Diagnostic. U0231\-00 \- Lost Communication With Rain Sensing Module. In addition, the customer may experience one or more of the following:Fuel Level and Range \(distance to empty\) \(DTE\) will both increase aftersleep cycle. Fuel Level % would increase when parked on a slope. Fuel gauge remains at full for 107 km \(67 miles\) vs. 73 km \(45 miles\). After fueling up with 68 liters \(18.1 gallons\) of fuel, the fuel gauge onlywill read around 1/4 tank and the low fuel lamp is still illuminated. After 10 minutes of driving, the gauge only read around 3/4 tank andthe fuel lamp is still on. Refuel button is pressed for a short duration of 500ms or less at key off,then the fuel door is not opened.
- [S2123000061](/bulletins/10230237.md), 2023-01-17, Service bulletin: STEERING; PARKING BRAKE; WHEELS. Leather Steering Wheel Has Loose Material Poor Appearance
- [S2108000170](/bulletins/10230194.md), 2023-01-17, Service bulletin: PARKING BRAKE. Head unit button stuck DTC code B14DA\-2A
- [S2108000114](/bulletins/10230031.md), 2023-01-17, Service bulletin: PARKING BRAKE. Stored B1552\-2A DTC Emergency Call Button Stuck
- [9004163](/bulletins/10229995.md), 2023-01-17, Service bulletin: PARKING BRAKE; VEHICLE SPEED CONTROL; WHEELS. MOLDING, Wheel Flare, Quarter Panel \(Wide wheel flares\) If you have a Jeep Grand Cherokee Summit, SRT, Trackhawk or Limited X with wide flares that are loose appearing or poor fitting, please document the VIN and provide the following information: 1.\) Take image of customer concern \- Highlighting flare adhesive surface location where the misaligned/loose/delamination condition is found with respect to the door or body. 2.\) Email images of concerns to FCA Redacted Content For additional questions, call FCA Redacted Content. If no response in 15 minutes, proceed with repair.
- [0805022](/bulletins/10229131.md), 2023-01-09, Service bulletin: FUEL SYSTEM, GASOLINE; SEAT BELTS; VEHICLE SPEED CONTROL; STEERING; ELECTRICAL SYSTEM; STRUCTURE; PARKING BRAKE. Flash: Body Control Module \(BCM\) Updates This bulletin involves reprogramming the BCM with the latest available software. The customer may experience one or more of the following: Fuel Level and Range \(distance to empty\) \(DTE\) will both increase after sleep cycle. Fuel Level % would increase when parked on a slope. Fuel gauge remains at full for 107 km \(67 miles\) vs. 73 km \(45 miles\). After fueling up with 68 liters \(18.1 gallons\) of fuel, the fuel gauge only will read around 1/4 tank and the low fuel lamp is still illuminated. After 10 minutes of driving, the gauge only read around 3/4 tank and the fuel lamp is still on. Refuel button is pressed for a short duration of 500ms or less at key off, then the fuel door is not opened. When the phone is charging on the Wireless Charging Pad Module \(WCPM\) and the fob is near, the customer opens then closes the liftgate, the IPC will pop up "key fob has left the vehicle" message. On vehicles equipped with Electronic Steering Lock \(ESL\), it requires 3 Start/Stop button presses to transition from key off to key run when the vehicle was in deep sleep.
- [S2108000129](/bulletins/10223302.md), 2022-10-17, Service bulletin: PARKING BRAKE; ELECTRICAL SYSTEM. The Ignition State Does Not Change When The Start/Stop Button Is Pressed
- [9004163](/bulletins/10223223.md), 2022-10-17, Service bulletin: WHEELS; PARKING BRAKE; VEHICLE SPEED CONTROL. MOLDING, Wheel Flare, Quarter Panel \(Wide wheel flares\) If you have a Jeep Grand Cherokee Summit, SRT, Trackhawk or Limited X with wide flares that are loose appearing or poor fitting, please document the VIN and provide the following information: 1.\) Take image of customer concern \- Highlighting flare adhesive surface location where the misaligned/loose/delamination condition is found with respect to the door or body. 2.\) Email images of concerns to FCA Redacted Content For additional questions, call FCA Redacted Content. If no response in 15 minutes, proceed with repair.
- [S2108000170](/bulletins/10221608.md), 2022-09-26, Service bulletin: PARKING BRAKE. Head unit button stuck DTC code B14DA\-2A

JSON: [/v1/bulletins/10223810](/v1/bulletins/10223810)

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