Thor Motor Coach Astoria, Thor Motor Coach Montecito, Thor Motor Coach Tuscany, Thor Motor Coach Ultrasport, Thor Palazzo, model years 2011 to 2013. Filed by Thor Motor Coach and reported to NHTSA on 11 December 2012. 727 vehicles potentially affected.
What the notice says Thor Motor Coach (Thor) is recalling certain model year 2011 through 2013 Tuscany, Astoria, Ultrasport, Montecito, and Palazzo recreational vehicles manufactured from May 17, 2010, through October 30, 2012, built on Freightliner brand XB and XC custom chassis. The vehicles are equipped with diode jumpers that may come …
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
What owners ask about this recall
- Which vehicles does recall 12V574 cover?
- Thor Motor Coach Astoria, Thor Motor Coach Montecito, Thor Motor Coach Tuscany, Thor Motor Coach Ultrasport, Thor Palazzo, model years 2011-2013.
- What is wrong with them?
- Thor Motor Coach (Thor) is recalling certain model year 2011 through 2013 Tuscany, Astoria, Ultrasport, Montecito, and Palazzo recreational vehicles manufactured from May 17, 2010, through October 30, 2012, built on Freightliner brand XB and XC custom chassis.
- What can happen if it is not put right?
- Failure of the cruise control to disengage when the brakes are applied may increase the risk of a vehicle crash. Without the brake lights illuminating when the brakes are applied, the driver's intent is not communicated, increasing the risk of a crash.
- Is there a fix yet?
- Yes, and it is free. Daimler Trucks (DTNA) will notify owners on behalf of Thor, and Freightliner dealers will inspect the diode jumpers to make sure they are fully locked in place and will correct the vehicles as needed. The recall is expected to begin January 28, 2013.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “Failure of the cruise control to disengage when the brakes are applied may increase the risk of a vehicle crash. Without the brake lights illuminating when the brakes are applied, the driver's intent is not communicated, increasing the risk…”
affected
in the notice
caught
| Campaign | 12V574 |
|---|---|
| Filed by | Thor Motor Coach |
| System at fault | Electrical System |
| Reported to NHTSA | 11 December 2012 |
| Model years | 2011-2013 |
| Vehicles named | THOR MOTOR COACH ASTORIA, THOR MOTOR COACH MONTECITO, THOR MOTOR COACH TUSCANY, THOR MOTOR COACH ULTRASPORT, THOR PALAZZO |
What the notice says today
The consequence
Failure of the cruise control to disengage when the brakes are applied may increase the risk of a vehicle crash. Without the brake lights illuminating when the brakes are applied, the driver's intent is not communicated, increasing the risk of a crash.
The remedy
Daimler Trucks (DTNA) will notify owners on behalf of Thor, and Freightliner dealers will inspect the diode jumpers to make sure they are fully locked in place and will correct the vehicles as needed. The recall is expected to begin January 28, 2013. Owners should contact DTNA Warranty Campaigns Department at (800) 547-0712, 7:00 a.m. to 4:00 p.m. Pacific Time Monday through Friday, e-mail address DTNA.Warranty.Campaigns@Daimler.com, or the Customer Assistance Center at (800) FTL-HELP after normal business hours.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 1,836 notices in the record whose component field names electrical system. Across that group the median wait before owners were written to was 41 days.
Last checked . No change has been recorded in the wording.
The models named here, across their whole recall history
- Thor Motor Coach Astoria recalls: 5 US campaigns
- Thor Motor Coach Tuscany recalls: 25 US campaigns
- Thor Palazzo recalls: 10 US campaigns
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 12V574, wording as read on 17 September 2026. https://carsmultiverse.com/recall/12v574/
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other Thor notices we hold
- 20V498: 2019-2021 Hurricane and Windsport motorhomes, models 27B, 29M, 32T, 33X, 34J, 34R and 35M
- 17V758: various 2003-2018 recreational
- 17V381: 2018 Outlaw 29H motorhomes
- 17V362: 2017 Challenger 37YT motorhomes
- 17V283: 2016-2017 Venetian and Tuscany motorhomes equipped with Cummins ISL engines
- 16V571: model year 2012-2017 Ace, 2013 Citation, 2012-2013 Siesta and 2017 Four Winds and Road Bear Rental motorhomes
- 15V191: model year 2015 Siesta and Citation motorhomes manufactured from September 26, 2014, through February 27, 2015, and built on a Mercedes-Benz Sprinter chassis
- 14V385: model year 2014-2015 Axis and Vegas motorhomes manufactured August 2, 2013, to June 18, 2014
All 13 Thor campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 12V574 on 23 August 2026, they were:
- Defect summary
7c276a85 - Consequence
58aaf944 - Remedy
4bfc9663
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 12V574 · how the whole register is watched
This notice names one vehicle among several registers that have written about it. Every notice this site holds for the Thor Palazzo, in all seven, is kept on that vehicle's own page, with the newest in each.
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Owners of these cars
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