Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 1 of 1 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Service Brakes, Hydraulic. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports1 fire reports0 injury reports
What owners actually said
1 reports
5,000 miles · Jul 29, 2010
Service Brakes, HydraulicFire
TL* THE CONTACT OWNS A 2006 MONACO MONARCH RV EQUIPPED WITH A WORKHORSE CHASSIS W21. WHILE DRIVING APPROXIMATELY 35 MPH, THE BRAKE PEDAL WAS ENGAGED AND THE ANTI-LOCK BRAKE SYSTEM WARNING LIGHT ILLUMINATED. THE CONTACT SMELLED A BURNING ODOR AND NOTICED SMOKE EMITTING FROM BOTH FRONT WHEELS. THE VEHICLE WAS PULLED OVER TO THE …
Read full complaint
TL* THE CONTACT OWNS A 2006 MONACO MONARCH RV EQUIPPED WITH A WORKHORSE CHASSIS W21. WHILE DRIVING APPROXIMATELY 35 MPH, THE BRAKE PEDAL WAS ENGAGED AND THE ANTI-LOCK BRAKE SYSTEM WARNING LIGHT ILLUMINATED. THE CONTACT SMELLED A BURNING ODOR AND NOTICED SMOKE EMITTING FROM BOTH FRONT WHEELS. THE VEHICLE WAS PULLED OVER TO THE SIDE OF THE ROAD. THE VEHICLE WAS ABLE TO RESUME OPERATION. A RECALL NOTIFICATION WAS RECEIVED ON MAY 21, 2009 ASSOCIATED WITH NHTSA CAMPAIGN ID NUMBER 09V110000 (SERVICE BRAKES, HYDRAULIC). THE REPAIR PART WAS UNAVAILABLE AND THE MANUFACTURER WAS UNABLE TO PROVIDE AN ARRIVAL DATE FOR THE PART. THE CONTACT HAD CONCERN OF THE SAFETY RISK INVOLVED AND THE UNCERTAINTY OF THE PART AVAILABILITY. THE FAILURE MILEAGE WAS APPROXIMATELY 5,000.
NAVISTAR IS RECALLING CERTAIN MODEL YEAR MY 2001-2008 WORKHORSE W20, W21 AND W22 CHASSIS AND CERTAIN MODEL YEAR 2009 THROUGH 2011 MONACO RV ADMIRAL, ARISTA, MONARCH, AND RIPTIDE RECREATIONAL VEHICLES EQUIPPED WITH AXLES THAT INCLUDE BOSCH ZOPS OR ZOHT PIN SLIDE HYDRAULIC DISC BRAKES. WHEN COMBINED WITH OCCASIONAL OR SEASONAL VEHICLE OPERATION MAY EXPERIENCE CALIPERS STICKING IN THE APPLIED POSITION. THIS CAN RESULT IN ABNORMAL HEAT GENERATION AT THE WHEEL END CAUSING BRAKE DRAG. THE DRIVER WOULD NORMALLY HAVE WARNING OF THE BRAKE DRAG IF UNDETECTED BY THE DRIVER.
Consequence & remedy
Consequence: THE TEMPERATURE INCREASE AT THE WHEEL END CAN EVENTUALLY LEAD TO SOFT PEDAL CONDITIONS DUE TO BRAKE FLUID BOIL, AND POSSIBLE EXTENDED STOPPING DISTANCE INCREASING THE RISK OF A CRASH.
Remedy: WORKHORSE DEALERS WILL REPLACE ALL FOUR BOSCH BRAKE CALIPER ASSEMBLIES FREE OF CHARGE. THE SAFETY RECALL BEGAN ON SEPTEMBER 16, 2010. OWNERS MAY CONTACT WORKHORSE AT 1-877-246-7731.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0
No exact-year investigations in this snapshot.
2006 Workhorse W21 Problems, Complaints & Recalls | Skip That Year
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