2023 Winnebago Ekko: fire, smoke or burning smell

Filed Jul 8, 2026 · Electrical · NC

After starting the vehicle I noticed an unusual whine. After a few seconds of idling I noticed that it smelled like something was on fire. I turned off the vehicle and began looking for smoke. I did not find it. After a little research I discovered that it is a very well known failure that the Balmar alternator on Winnebago EKKOs fails catastrophically, sometimes catching on fire. I followed instructions to disable the Balmar. I let the vehicle cool completely. I restarted the vehicle and let it idle for a long while and the whine and the smell never returned. I used the Lithionics app to confirm that the batteries were not being charged while the engine was idling.

Filed Mar 22, 2026 · Electrical, Engine · CA · fire

We had reported on Sat, 3/21/26 to Winnebago that we noticed our Balmar alternator had stopped charging the battery the night before on Fri, 3/20/26 during a 2.5 hour trip to Sebastapol, CA. We drove to Santa Clara, recharged batteries with shore power and then drove to Santa Cruz, CA. This morning on Sun 3/22/26, our 2nd Balmar Alternator installed by NIRVC/Las Vegas in Mar-April 2024 under the 174 Recall caught on fire. Fortunately, we were idling in a parking lot before getting on the freeway, and could hear the whining noise, smell the burning alternator, and see the smoke coming out of the engine before the fire grew too large. We were able to extinguish the fire and keep the damage limited to the Balmar alternator. Had we gotten out onto Highway 17, ours and others lives could have been severely impacted, as we likely would not have noticed nor been able to deal with the fire as quickly. We have unplugged the 4-pin wire plug from the Balmar regulator. Once we restarted the engine, a piece of plastic came flying out, and then everything started spinning freely. We were able to drive home. We have reported the fire to Winnebago and are awaiting communication as to next steps. We have video footage of the fire and vehicle is available for inspection.

Filed Jan 21, 2026 · Electrical · WI

Balmar alternator began smoking and emitting a burning smell, also began discharging the house batteries. This condition caused us to be disabled along the roadway and entailed crawling under the vehicle to disconnect the wiring from the alternator. Unable to get immediately repaired as no Balmar replacement parts were available from Winnebago. Repairs completed December 2024 by dealer. Additional Service Campaign 75-09 on Balmar alternators May 20, 2025 to cut charging rate by approximately 50% to prevent overloading. This service also completed by dealer August 18, 2025

Filed Nov 10, 2025 · Electrical · CA

Reference the federal safety agency Safety Recall 23V‑234 Just experience failure of second Balmar alternator at about 26,000 miles. Replacement of first failure was done in conjunction of above referenced safefy recall. Work was performed in March of 2024. Subsequent to the above referenced recall Winnebago issued a Service Campaign (75-09) to derate (adjust/lower alternator output settings)in order to reduce the risk of overloading the alternator. The service campaign work was completed in June 2025. Numerous other Ekko owners have experience multiple Balmar alternator failures including some that have caught on fire. I was aware of the early warning signs of problems (high pitched whine that varies with RPM's and alternator output that drops to near zero) and proactively unplugged/disconnected the alternator before potentially serious consequences arose. My situation, and those of other Ekko owners clearly shows there is a design and/or quality issue that requires corrective action.

Filed Oct 6, 2024 · Electrical, Engine · MN · fire

We believe our Balmar (the second alternator that powers our Lithium batteries) failed and then created enough heat to either have a small fire or produce copious amounts of toxic smoke. This is a known problem with the Winnebago EKKOs. There has been one round of recalls for the Balmar re-wiring which we had done at the Winnebago Factory Center in Forest City, IA on November 21, 2023. We were in the parking lot at Whole Foods in Jackson, Wyoming when this happened. We opened the hood when we smelled the plastic burning smell and smoke was pouring out. People were gathering and telling us to call 911 to get the fire department out. We decided to discharge the fire extinguishers provided with our EKKO (a Kidde ABC model). If the whole thing caught fire, obviously other people and cars parked next to us would have been in danger. Yesterday, we heard a new “whine” coming from our engine and noticed that our app that measures the power coming into the lithium batteries was fluctuating way more than usual and so we suspected the system was starting to fail. We had no idea it would fail so quickly and so dangerously.

Filed Jul 27, 2023 · Electrical · MD

The Balmar alternator gets very hot and emits very loud high-pitched whine. Others who have reported this heat/sound without further action have reported the alternator has caught on fire.