2026 Ram Promaster TSBs
19 Technical Service Bulletins across 5 categories
Electrical
6 bulletinsRain Sensing Auto Wipers and Auto on Head Lamps Inoperative.
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Rain Sensor Internal Failure.
Rain Sensing Auto Wipers and Auto on Head Lamps Inoperative.
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Rain Sensor Internal Failure.
Telematics Box Module (TBM) Backup Battery Replacement When DTC B1E21 Is Present Technicians may experience a...
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Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): B1E21-96 - Backup Battery Component Internal Failure.
Telematics Box Module (TBM) Backup Battery Replacement When DTC B1E21 Is Present echnicians may experience a Malfunction...
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Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): B1E21-96 - Backup Battery Component Internal Failure
DETECTOR - EVAPORATIVE SYSTEM INTEGRITY MODULE
DETECTOR - EVAPORATIVE SYSTEM INTEGRITY MODULE
Other
5 bulletinsWATER PUMP
WATER PUMP
Horn Sound Is Weak, Off Tone, Inoperative, Or Intermittent.
Water Pump & Chain Case Cover
Water Pump & Chain Case Cover
Engine
4 bulletinsEngine Oil Leak
Data collection required for all 2020-2026MY vehicles with 3.6L PSU engines during any of their first 3 engine oil changes.
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This data collection is applicable to all vehicle with engines with sales codes: ERG, ERC, EH3 and ERF. To assist with monitoring and quality improvement of the 3.6L engine, every time a vehicle comes for any of the first 3 oil changes, please use wiTECH to record the total engine idle time and the total engine runtime. 1. Prior to perform the oil change connect wiTECH diagnostic tool. 2. Navigate to the topology screen on the action item section. 3. Once the topology screen loads, disconnect wiTECH and continue with oil change.
MODULE - ENGINE CONTROLLER
ADJUSTER Valve Lash Customer's complaint may include a ticking noise coming from the engine.
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Technician's observations can refer to spongy or stuck hydraulic lash adjusters. Exhaust lash adjusters found with a "spongy" condition (compressible plunger) leading to the assumption of being defective/malfunctioning. EXHAUST lash adjusters are designed to be COMPRESSIBLE by hand. Intake lash adjusters found with a stiff or stuck condition (non-compressible plunger) leading to the assumption of being defective/malfunctioning. INTAKE lash adjusters are designed to be NON COMPRESSIBLE by hand. Do Not Replace EXHAUST lash adjusters when the following condition is present: should be compressible, but they will exert a reactionary spring force during compression and return to full expansion without a compression force. Do Not Replace INTAKE lash adjusters when the following condition is present: should feel very firm and difficult to compress. Once the correct functioning of the intake and exhaust lash adjusters is validated with the procedure above, refer to the Service Manual "HYDRAULIC LIFTER(S) NOISE DIAGNOSIS" procedure. After the corresponding service procedures from the Service Manual involving the Lash Adjusters have been conducted, refer to the detailed instructions in the Service Manual to diagnose and/or service any other component.
Infotainment
3 bulletinsHarman R1H Uconnect 5 Radio Software Flash Error Codes
Intermittent Uconnect Box Requires Service Message.
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TBM Setting Stored Or Pending DTCs B22A9, B1560, B1561, B1562
Radio Over The Air Update from U33.43(E) to U40.C R1H Software Version (FOTA) Customers may experience one or more of...
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the following: - Navigation non-functional, not updating current position. - Screen Off hard key inoperative, Soft key on radio screen still operational. - CarPlay and Android Auto stability issues. - Text cut-off in different menus or pop-up messages - Voice Recognition not working for specific voice commands
Body & Paint
1 bulletinWindshield Wiper Blade Maintenance Customers may experience one or more of the following: Wiper blades that...
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chatter/streak/jump/skip/smear or make noise while traveling across the windshield.