2019 Ram 1500: start-stop system problems

Filed Jul 20, 2026 · Electrical, Steering · IN

I was on the highway when the vehicle alerted me that shift was unavailable then the auto start/stop was unavailable then the airbags were unavailable then my FUEL and my MPH were not reading. My windshield wipers started all on their own and could not be turned off! And my EMERGENCY LIGHTS WERE INOP. I LOST POWER STEERING and was locked in gear! All while in morning rush hour traffic on the highway! The vehicle gave me a notification to get to my destination before turning it off or changing gears because it would not go back into gear. I got off the highway as safely as I could without EMERGENCY LIGHTS OR TURN SIGNALS and proceeded to a stop light. While slowing down I had no steering control. I pulled over and had to force the wheel to turn then I attempted to accelerate to move and had no power. So I was stuck. I had emergency services come and tow my vehicle to Chevrolet of Homewood at that point who is currently looking at it.

Filed Nov 7, 2025 · Electrical · IN

Unknown; Stop/Start sends error and malfunctions.

Filed Oct 21, 2025 · Electrical · TN

Start stop/ Battery/ Engine lights all came on and warning messages said, stop start unavailable and some electrical power loss. Vehicle was taken to dealership for repairs. MGU was defective (Motor Generator Unit). Was informed parts were not available back ordered. 5000 units on order no available parts.

Filed May 20, 2025 · Electrical, Engine · MN

Driving 60mph in 8th gear while raining, 40 deg F, in Minnesota. The truck shut off (I did not press the Start/Stop button) and dash said "Vehicle Not in Park." Went to pull over, put on turn signals, but they didn't work (it acted like the vehicle was completely shut off but was still rolling at 50+ mph in 8th gear - there was no indication on the dash that showed green light indicating turn signal was working). I suspect brake lights also did not work at this time, but cannot confirm because I couldn't see them. I pulled over to shoulder, slowed to a stop, and put vehicle into Park manually. Pressed Stop/Start button and vehicle started. No codes were thrown. Drove another 2-3 miles and similar issue happened again. Display flashed on and off (then completely turned off) when coming to a stop this time. Vehicle stayed running but again said "Vehicle Not in Park" on dash. No other indication on dash (no warning lights). Drove vehicle back to dealership to get inspected. Similar issue occurred 4 more times on the 12 mile drive to dealership. When I got the vehicle into the service shop, I put it into Park, then pressed the Start/Stop button, but the truck would not shut off. I left the vehicle with the dealer and they are currently diagnosing the issue. 105,000 miles on vehicle. First time this issue has ever occurred on the Ram since I bought it used with 67,000 miles on it. Scared the heck out of me - I had cars swerve around me as I pulled off to the shoulder without any indication - no brake lights (I assume), no turn signals. Very scary. I am worried about driving my family (wife and 2 young children) in this vehicle. What has scared me even more is I looked up this issue online and I have found 100s of examples in the forums of similar (or exactly the same) issue happening to them! I have had all recalls completed on my truck and keep meticulous care of it. I am an engineer and understand technical details well - this electrical issue scares me. Not safe.

Filed Mar 7, 2025 · Acceleration, Brakes · TX

I took my 2019 Ram 1500 to a Ram dealer on 10/21/2024 for the Anti-lock Breaking System Module Configuration Mismatch safety recall 75B/the federal safety agency 24V‑653. There were no warning lights on in my vehicle when it was dropped off. When the dealership attempted to apply the safety recall it caused something in the ABS module to fail, and they then said I needed a new ABS module that will cost $500-$700 to replace. This failure has disabled traction control, antilock braking, and auto start/stop. The dealer said they did not have the ABS module and had no ETA as to when it would be in stock. The ABS module has been out of stock nationally for months with no estimated time of availability. Now, there are warning lamps and messages for the ABS and Traction Control. Now, I am unsure if the vehicle is safe to drive in adverse conditions where ABS and traction control would likely be needed. At the very least, a major part like an ABS Module should be available for a fairly late model vehicle. This defect "repair" has obviously caused the ABS Module failure. The dealer tried to say there was already something wrong with the ABS Module before the repairs were attempted, but neither I nor they noted any warning lamps or messages before the repairs were attempted. If the module had already failed but did not produce any warnings, that sounds like another defect that they should be required to repair.

Filed Dec 20, 2024 · Electrical, Engine · WI

I came to a stop at a red light. The auto stop/start was active so the engine stopped. When the light turned green, I lifted off the brake and the truck started back up as usual. Once I got into the middle of the intersection, the truck stalled out and the parking brake set and skidded to a stop. I restarted the truck and released the parking brake. I made it 10 more feet and the truck stalled a second time and again set the parking brake. I had several cars swerve to avoid my truck. I started up and made it off the road to a parking lot. I couldn't replicate the issue and drove home cautiously. 18*F outside temp and recent snow storm.

Filed Jul 15, 2024 · Driver assistance, Electrical · UT

service shifter, park sense unavailable, auto start stop unavailable warning lights came on ever time truck are in slow speed or stopped. sometimes cancel the cruise control and turn on the check engine light

Filed Oct 29, 2023 · Electrical, Engine · PA

Electrical system failed. A new battery was installed 1 month ago and on 10/28/23, I went to start the truck and it hesitated but started up then I lost power and it would not start again. I had it jumped and the service auto start/stop light, check engine and battery light came on. I pulled out from work and the engine hesitated. After proceeding over an overpass, I went to make a left hand turn onto the highway and a message came up indicating the power steering system had failed, the emergency brake came on and I again experienced a loss of power. I was able to get it to the side of the road on the on ramp where it shut down completely and had to be towed. Due to the loss of power steering, I was almost hit by an oncoming vehicle headed in the opposite direction. The engine also hesitated after starting, the RPM's were spiking to 4K every few seconds and it was producing a clicking sound before my initial departure. The vehicle was towed to Moyer Ram in Lebanon, PA pending an evaluation. In the past, this vehicle was in the shop 4 times for almost getting me in an accident as the vehicle would lose speed and the RPM's would spike and slow the vehicle down to less than 30 miles per hour. This happened several times and despite a dispute pursuant to the lemon laws and multiple videos showing what was happening, they ruled against replacing the vehicle. At one point on a local interstate, while traveling over 65mph's, it was like it slipped into neutral, I lost speed rapidly and was almost rear ended by a tractor trailer. I still have that problem 1-2 times/month but they will do nothing about it and the mechanic couldn't replicate the problem while the dealer had it. Bottom line is I do not feel safe in this vehicle and it's an accident waiting to happen.

Filed Aug 22, 2023 · Electrical, Engine · NJ

Hi The Stop/Start system is not working correctly, the engine stated to misfire randomly and now 70,00 + miles the stop and start system is making the truck unsafe to drive. I have taken it to my local ram / jeep dealer and the problem is not fixed.

Filed May 14, 2019 · Electrical · 11 miles · VA

Tl* the contact owns a 2019 ram 1500. The contact stated that the auto start/stop feature was not functioning properly as the vehicle had lunged forward several times causing the contact to apply extreme force to the brake pedal to slow down and stop the vehicle. The dealer (lustine chrysler dodge jeep ram, 14211 jefferson davis hwy, woodbridge, va 22191, (703) 496-5202)) had not test drove the vehicle yet to determine if they may be able to replicate the failure. The contact was uncertain if the feature may cause a catastrophic crash due to the intermittent failure. The manufacturer was notified of the failure to determine if they had a remedy. The VIN was not available. The approximate failure mileage was 11.