Service bulletin 2400914

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10229979
Published by NHTSA	2023-01-17
Manufacturer's number	2400914
Manufacturer's date	2014-10-03
NHTSA component	VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

HVAC System Improvements

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
DODGE DURANGO	2014
JEEP GRAND CHEROKEE	2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
2400417	2022-10-31. Service bulletin. Flash: HVAC System Improvements This bulletin involves reprogramming the Heating Ventilation Air Conditioning (HVAC) Module with new software. Some customers may experience one or more of the following conditions:HVAC is shutting off during a cold engine crank due to low voltage, user will need to manually turn HVAC system back on.. Erratic blower speed operation when using HVAC system in auto mode. Brief burst of hot or cold air after adjusting the HVAC temperature setting. Updating the HVAC software will correct these conditions.
05152029	2022-10-17. Service bulletin. Washer Fluid Level Sensor Prior to replacing this part due to "Low Washer Fluid" tell tale light on the dash and the washer fluid bottle is full, please perform the this inspection. Inspect the sensor for a fluid coating on the sensor pins. Orange colored rain repellant can cause this fluid build-up. Clean the pins, drain the reservoir, and fill with Mopar approved washer fluid. Check to determine if the issue has been resolved. Continue with repair if necessary. Also, please inform the customer not to use Rain-X in the system to avoid this issue. Please contact Chuck Hood at cell (248) 613-7591 if you have questions or need additional information. Thank you.
3100419	2022-09-15. Service bulletin. Authentic Mopar® Glass Replacement This bulletin involves discussing FCA US LLC position with regard to collision repair industry awareness regarding the recommended usage of Authentic Mopar® Glass.
9003109	2022-09-15. Service bulletin. Washer Fluid Level Sensor Prior to replacing this part due to "Low Washer Fluid" tell tale light on the dash and the washer fluid bottle is full, please perform this inspection: Check if float sensor is rotated off location from the bottle anti-rotation features that surround the SENSOR. Check to determine if the issue has been resolved. Continue with repair if necessary. Please contact Chris Koch at cell (248) 248-622-6417 if you have questions or need additional information.
08-053-16	2022-09-15. Service bulletin. Flash: RA3/RA4 Radio Software Enhancements This bulletin involves inspecting and, if required, updating the radio software. A small number of customers may experience one or more of the following: · Poor or no connection to cellular network (U.S. market only). · HVAC temperature out of sync with radio display (KL vehicles). · Intermittently blind spot chime will not turn off (KL vehicles only). · Enable High Definition (HD) feature (RA4 radios located in Canada and Mexico). · Low battery condition due to the radio remaining powered up after the ignition has been turned off (U.S Markets Only). · The Radio may switch from SiriusXM to an AM station by itself. · Uconnect registration always present, can not remove Uconnect account. · Teleprompter does not appear when pressing the Voice Recognition (VR) button. · VR operation cancels while in media mode. · Radio may display previous image before displaying the current image. · Navigation lost vehicle position during route calculation. · Navigation displays are missing after vehicle heading changes. · Navigation giving incorrect guidance to exit the highway. · FM audio may switch to AM after ignition cycle. · Text messages appear as sender?s phone number not their name. VR phone button may not work at times. · Audio muted after AUX device is disconnected. · VR, ? Listen? to text will only play first message. · Drive Mode: Eco, sport or normal setting may not be saved after key cycle (LA, LD, LX and ZD Only). · Drive Mode: Shift light On/Off, out of sync (LA, LD, LX and ZD Only). · SirusXM station information does not update. · Speed adjusted volume, may not work. · AM or FM seek or tuner soft keys may be missing. · Display screen show ambient temperature as ?- - ? not normal values. Improvements: · User can pair iPhone with Uconnect via Bluetooth and talk to Siri through Uconnect. · Ability to press VR button for more than one second.
24-005-15	2022-07-25. Service bulletin. Flash: Temperature Control Enhancement This bulletin involves reprogramming the HVAC Module with new software. Customers may experience the following condition: ? Vehicle cabin temperature seems too warm even after reducing the Automatic Temperature Control setpoint. ? Heat mode becomes active when the radio is configured to read in °C and cabin temperature is set to LO. Updating the HVAC software will correct these conditions.
18-043-16 REV. A	2020-10-26. Service bulletin. Flash: 3.0L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience the following condition: · Buzzing type noise in the fuel rail area of the engine. · Bucking under hard acceleration. The software enhancements also include: · Improvements to protect engine from fuels out of the EN590 specifications or fuels with a high biodiesel content. · Improvements to the A/C compressor relay duty cycle operation to prevent ignition off battery draw.
S1808000175	2020-04-27. Service bulletin. LED Front Fog Lamps Flicker Or Intermittently Light, Are Dim Or Inoperative. A U11E9, or B16FB-15 may be set
31-004-19	2019-12-16. Service bulletin. Authentic Mopar® Glass Replacement This bulletin involves discussing FCA US LLC position with regard to collision repair industry awareness regarding the recommended usage of Authentic Mopar® Glass.
9004036	2019-07-15. Service bulletin. ACTUATOR, A/C and Heater Before replacing HVAC actuator, please contact either Thomas Conway (248) 635-7090 or Paul Aquino (248) 854-4819. Engineering is looking to gather infomation on fail mode and customer concern. If no response in 15 minutes, proceed with repair.