2018 Ram Promaster Electrical system Problems

“Poor seal at windshield allowing water to enter into engine bay and electrical. Engine dies out when driving while raining, headlights blow and need to be replaced. Electrical problems since water is always getting into engine bay. Dealer says its common and is nothing they can do about it.”

“My vehicle is subject to open safety Recall 67C involving the cooling fan module and related fuse protection in the engine compartment. The recall has been open since October 2025. The manufacturer and dealer have confirmed that the remedy/parts are still not available and that there is no ETA for repair. At this time, I have not experienced an obvious operating failure with the vehicle itself. However, the open safety recall remains unresolved, and because no remedy exists yet, the recall cannot be completed. …”

“As of approximately around the 15th of April 2023, we realized suddenly that our lithium battery in our 2019 Winnebago Travato was not being replaced with charging from our Volta alternator from driving or from our solar as it has always done. The KISAE DC to DC charger and the Volta system show an error message that they were/are ‘overheated’. Testing of the DC to DC charger shows that it’s receiving far over the correct voltage. Upon diagnostics at a RV dealership they found the alternator is being overcharged. …”

“Vehicle Electronic throttle control had a malfunction and system went into limp mode on a highway at highway speeds of 70mph. The engine destroyed itself instead of limping. Lost power and almost got hit by a semi truck and other vehicles when this happened. Ended up getting a used engine due to current remanufacture costs etc. Total cost out of pocket because the dealership lied about my warranty and what was covered and for how long was around $7,000 parts lanor etc. Limp mode is dangerous and the way it happened on a highway could have gotten me or others seriously hurt or killed. …”

“I bought a Ram pro 2500 in april 2018. I start my business as an owner-operator and started driving on highways (interstate delivery). After 2 weeks, the navigation, light and sometimes behind the straight wheel dashboard screen started to turn off (while I was driving and using navigation). After that cigarette litter didn't work anymore. I contact the service shop and took the car to them, they said it is not a big deal and they switched the fuse or maybe fuses. I start again my business. This time, daytime running light start to not work and after a few days my check engine light popped up. …”