Recall 18V712 covers 172 2018-2019 Roadtrek motorhomes for generator overcharging that can create battery acid spill risk. Repair is free at franchised Roadtrek dealers.
Roadtrek is recalling 172 2018-2019 Simplicity SRT, Aktiv 2.0, Aktiv, Banff, Axion, Zion SRT, Simplicity, and Zion motorhomes because the undermount generator can overcharge the auxiliary batteries. If non-sealed replacement batteries are installed, overcharging can cause an acid spill and increase the risk of injury, and Roadtrek dealers will complete the free repair.
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What's wrong?
The undermount generator on the 2018-2019 Roadtrek motorhomes in this recall sits below the coach and charges the auxiliary battery system. That battery system powers the living-area equipment when the motorhome is not plugged into shore power. An internal regulator is supposed to hold charging voltage within the proper range so the batteries are charged without being overworked.
On affected motorhomes, that internal regulator is faulty. It can let the generator send too much voltage into the auxiliary batteries, which overcharges and damages them. The recalled generator is identified by its date code and by a black regulator cap.
Owners have warning signs before failure. The display voltage meter can show more than 16 volts, there can be a loud popping sound from underneath the vehicle when AGM battery caps become unseated, or coach battery run time can drop. These signs involve the coach battery system, not the primary vehicle electrical system.
Who's affected?
Spans 8 RV model lines across the 2018 and 2019 model years, all tied to recreational vehicle equipment.
| 2019 Roadtrek Simplicity SRT | Recreational vehicle/trailer |
|---|---|
| 2018 Hymer Aktiv 2.0 | Recreational vehicle/trailer |
| 2019 Hymer Aktiv 2.0 | Recreational vehicle/trailer |
| 2018 Hymer Aktiv | Recreational vehicle/trailer |
| 2019 Hymer Aktiv | Recreational vehicle/trailer |
| 2019 Carado Banff | Recreational vehicle/trailer |
| 2018 Carado Axion | Recreational vehicle/trailer |
| 2019 Roadtrek Zion SRT | Recreational vehicle/trailer |
| 2018 Roadtrek Simplicity | Recreational vehicle/trailer |
| 2018 Roadtrek Simplicity SRT | Recreational vehicle/trailer |
| 2018 Roadtrek Zion SRT | Recreational vehicle/trailer |
| 2019 Roadtrek Zion | Recreational vehicle/trailer |
| 2019 Roadtrek Simplicity | Recreational vehicle/trailer |
| 2018 Carado Banff | Recreational vehicle/trailer |
| 2019 Carado Axion | Recreational vehicle/trailer |
| 2018 Roadtrek Zion | Recreational vehicle/trailer |
| Units affected | 172 |
| Field incidents | NHTSA has logged 2 field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific RV.
What's the safety risk?
Unsealed replacement batteries can spill acid if the charging system overcharges them, increasing injury risk. A display voltage above 16 volts, reduced coach battery run time, or a loud popping sound from underneath the vehicle signals a problem. If those signs appear, call the dealer and schedule service soon. Repair is free at any franchised Roadtrek dealer.
What should I do?
- Check your VIN to confirm your 2018-2019 Roadtrek motorhome, including Simplicity SRT, Aktiv 2.0, Aktiv, Banff, Axion, Zion SRT, Simplicity, or Zion, is included in this recall.
- Contact a franchised Roadtrek dealer to schedule the free generator voltage-regulator installation that prevents auxiliary-battery overcharging.
- Bring the recall notice if one arrived. Reference recall number 18V712 when you call.
- Keep non-sealed replacement batteries out of the auxiliary battery system until the generator regulator repair is complete.
- Call Roadtrek customer service at 1-800-663-0066 with recall questions.
What happens at the repair
At the dealer, a Roadtrek technician installs a new internal voltage regulator inside the undermount generator. That repair addresses generator overcharging that can damage the auxiliary batteries. The replacement part and labor are free under recall 18V712. When you schedule service, tell the service desk the recall involves the generator voltage regulator and auxiliary battery overcharge condition, so they can confirm the correct parts and campaign before the appointment.
Timeline
| October 11, 2018 | NHTSA published the recall |
|---|---|
| October 22, 2018 | Dealer notification began |
| October 22, 2018 | Dealer notification ended |
| October 22, 2018 | Interim owner notification (was planned for this date) |
| October 24, 2018 | Owner notification mailed |
Frequently asked questions
What is recall 18V712?
Recall 18V712 covers 172 2018-2019 Roadtrek motorhomes with an undermount generator that can overcharge the auxiliary batteries and damage them. If sealed batteries are replaced with batteries that are not sealed, overcharging can cause an acid spill and increase injury risk.
What should I do if my 2018-2019 Roadtrek Simplicity SRT, Aktiv 2.0, Aktiv, Banff, Axion, Zion SRT, Simplicity, or Zion is on this recall?
Check your VIN to confirm your specific motorhome is included in recall 18V712. If it is, contact a franchised Roadtrek dealer or call Roadtrek customer service at 1-800-663-0066 to schedule the generator voltage regulator repair. The dealer repair is free.
Is the recall repair free?
Yes. Federal recall law requires the recall repair to be performed at no cost, and the remedy for recall 18V712 says dealers will install a new internal voltage regulator into the generator free of charge.
What is the safety risk?
The safety risk is battery overcharging that damages the auxiliary batteries. If the original sealed batteries were replaced with batteries that are not sealed, overcharging can cause an acid spill and increase injury risk. The free dealer repair installs a new internal voltage regulator into the generator.
What if I bought this motorhome used?
The free recall repair still applies. Recall eligibility follows the VIN, not the original owner. Check your VIN to confirm whether your specific 2018-2019 Roadtrek motorhome is included, then reference recall 18V712 when you contact the dealer or Roadtrek customer service.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/18V712000 |
|---|---|
| Roadtrek customer service | 1-800-663-0066 |
| NHTSA recall # | 18V712 |
| NHTSA recall # (full) | 18V712000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 25, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →