2018–2019 Carado Axion, 2018–2019 Carado Banff, 2018–2019 Hymer Aktiv and 5 other models Recall: Undermount generator may overcharge the auxiliary batteries, damaging them
NHTSA campaign 18V712000 · Equipment · filed Oct 11, 2018 · verified Jul 30, 2026
The defect
Erwin Hymer Group North America, Inc. (Erwin Hymer) is recalling certain 2018-2019 Hymer Aktiv and Aktiv 2.0, Carado Axion and Banff and Roadtrek Simplicity, Simplicity SRT, Zion and Zion SRT motorhomes. The undermount generator may overcharge the auxiliary batteries, damaging them.
The risk
If the supplied sealed batteries are replaced with batteries that are not sealed, overcharging the batteries may result in an acid spill, increasing the risk of injury.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Erwin Hymer has notified owners, and dealers will install a new internal voltage regulator into the generator, free of charge. The recall began on October 24, 2018. Owners may contact Erwin Hymer customer service at 1-800-663-0066.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
Related recalls
More Carado Axion recalls
Source: NHTSA recall database, campaign 18V712000. Data last verified Jul 30, 2026.