2017-2020 Thor Motor Coach Recall 20V418: PDM Lights

Recall 20V418 covers 2,417 2017-2020 Thor Motor Coach motorhomes with a rear PDM defect that disables exterior lights. Repair will be free once available.

What's wrong?

On the covered 2017-2020 Thor Motor Coach motorhomes, the rear mounted Power Distribution Module is the electrical box that routes power to exterior lighting circuits. That module helps feed the rear marker lights, brake lights, and turn signals, so other drivers can see the motorhome and read its braking or turning movement.

The issue starts inside the module during manufacturing. Bending stress on the internal circuit board can lead to intermittent open circuits after the motorhome has been used for a period of time. When a circuit opens, power stops reaching one or more rear lights, leaving the marker lights, brake lights, or turn signals inoperative.

Owners can check for the warning sign before a trip. Walk around the motorhome and confirm the rear marker lights, brake lights, and turn signals work; an exterior light that does not illuminate is the sign this problem has appeared.

Who's affected?

Covers 5 Thor Motor Coach motorhome lines across the 2017-2020 model years, with turn-signal, brake-light, and electrical-system coverage for each included line.

A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific motorhome is included.

What's the safety risk?

Non-functioning exterior marker lights make the motorhome harder for other drivers to see and increase crash risk. Check the exterior lights during a pre-trip inspection, and schedule service promptly if any marker light is out. Repair will be free at any franchised Thor Motor Coach dealer once available.

What should I do?

1. Check your VIN to confirm your 2017-2020 Thor Motor Coach Tuscany, Tuscany Xte, Venetian, Aria, or Palazzo is included in this recall.
2. Contact Thor Motor Coach customer service at 1-877-855-2867 to confirm the repair status for your VIN.
3. Ask when the free PDM replacement is open; the replacement addresses rear marker lights, brake lights, or turn signals that stop working.
4. Reference recall number 20V418 and Thor Motor Coach recall RC000196 when you call.
5. Limit driving after dark or in traffic until the exterior-lighting repair is complete.

What happens at the repair

Once the dealer repair is available, a Thor Motor Coach technician will replace the rear mounted Power Distribution Module. The dealer repair will be free once it opens, with parts and labor covered under the recall. Thor Motor Coach used its standard reimbursement plan for owners who already paid for related PDM repairs. Keep your repair invoice and other documentation, then ask Thor Motor Coach customer service or the dealer how to submit the claim.

Timeline

Frequently asked questions

More information

Source documents

• Download Misc. Document (PDF) · RMISC
• Download Recall Document (PDF) (PDF) · RIONL
• Download Owner Notification Letter (PDF) · RCONL
• Download Owner Notice (PDF) · RCMN
• Download Recall Report (PDF) · RCLRPT
• Download Recall Acknowledgement (PDF) · RCAK

This article is generated from NHTSA's primary recall filings and reviewed against the source on May 23, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →