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2004 Workhorse W22

Owner reports · Recalls · Investigations

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There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

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When problems were reported

Mileage at the reported incident

64 reports with mileage · 28 unknown

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 74 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Service Brakes. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 4 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 reports3 fire reports0 injury reports

What owners actually said

92 reports
20,000 miles · Apr 17, 2008
Service Brakes, Hydraulic

RIGHT REAR BRAKE CALIPER OVER HEATING. *TR

NHTSA ODI #10224854

22,125 miles · Feb 21, 2008
Service Brakes, Hydraulic

BRAKE FAILURE ON 2004 WORKHORSE 22 CHASSIS WITH LESS THAN 22,000 MILES. LEFT REAR CALIPER LOCKED UP, MASTER CYLINDER FLUID BOILED OVER, ABS SENSOR MELTED. BOTH REAR CALIPERS REPLACED, ALL HOSES, ABS SENSORS, PADS, WHEEL BEARINGS. NO ACCIDENT, INJURIES OR FIRE. THIS CHASSIS IS ON A 2004 PACE ARROW MOTOR HOME. WE WERE ABLE TO …

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BRAKE FAILURE ON 2004 WORKHORSE 22 CHASSIS WITH LESS THAN 22,000 MILES. LEFT REAR CALIPER LOCKED UP, MASTER CYLINDER FLUID BOILED OVER, ABS SENSOR MELTED. BOTH REAR CALIPERS REPLACED, ALL HOSES, ABS SENSORS, PADS, WHEEL BEARINGS. NO ACCIDENT, INJURIES OR FIRE. THIS CHASSIS IS ON A 2004 PACE ARROW MOTOR HOME. WE WERE ABLE TO GET INTO AN RV PARK WITHIN A MILE BY PUMPING BRAKES. ALL PARTS ARE AVAILABLE, WITH THE EXCEPTION OF CALIPERS WHICH WERE EXCHANGED FOR CORE CHARGE. *TR

NHTSA ODI #10218722

21,343 miles · Feb 1, 2008
Service Brakes, Hydraulic

2004 WORKHORSE W-22 CHASSIS FRONT BRAKE FAILURE. WORKHORSE WILL NOT ADMIT THEY HAVE A PROBLEM, AND WILL NOT ASSIST ME IN FIXING THEM. 22K MILES ON CHASSIS AND THEY SAY I MUST PAY FOR REPAIRS. THEY SHOULD BE SUED FOR SUCH POOR BUSINESS ETHICS. LOCAL DEALER ADMITS TO REPAIRING THIS TYPE PROBLEM A MINIMUM OF 5 TIMES A MONTH! W…

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2004 WORKHORSE W-22 CHASSIS FRONT BRAKE FAILURE. WORKHORSE WILL NOT ADMIT THEY HAVE A PROBLEM, AND WILL NOT ASSIST ME IN FIXING THEM. 22K MILES ON CHASSIS AND THEY SAY I MUST PAY FOR REPAIRS. THEY SHOULD BE SUED FOR SUCH POOR BUSINESS ETHICS. LOCAL DEALER ADMITS TO REPAIRING THIS TYPE PROBLEM A MINIMUM OF 5 TIMES A MONTH! WILL COST ME 2-3000 DOLLARS OUT OF MY POCKET. POOR DESIGN, WITH NUMEROUS ACCOUNTS OF FAILURES, THEY SHOULD HAVE TO PAY FOR REPAIRS! *TR

NHTSA ODI #10216670

26,700 miles · Jan 20, 2008
Service Brakes, Hydraulic

REAR BRAKE CALIBERS FAILING AND REPLACING AT 16,000 MILES AND THE FRONT DOING THE SAME AT 26,500 MILES...INFORMATION BELOW IS FOR THE RECENT FAILURE, THE REAR FAILED IN 2007. *TR

NHTSA ODI #10215493

12,000 miles · Oct 16, 2007
Service Brakes, Hydraulic

COMPLETE BRAKE FAILURE AT 55 MPH DUE TO REAR BRAKE BEING LOCKED UP AND OVERHEATING. MECHANIC SAID IT WAS DEFECTIVE CALIPERS. *JB

NHTSA ODI #10205828

Mileage unknown · Mar 2, 2007
Electrical System

I HAVE A HOLIDAY RAMBLER VACATIONER MOTOR HOME WITH A WORKHORSE CHASSIS THERE IS A RECALL NHTSA # 06V22700 FOR AN INSTRUMENT CLUSTER PANEL, WHICH WAS REPLACED ON MY VEHICLE, THAT CONTINUES TO BLANK OUT INTERMINTANTLY CAUSING THE PANEL TO GO DARK AT NIGHT, BUZZING ALARM, AND ALL THE GUAGES TO RESET. I HAVE CALLED WORKHORSE 3/2/…

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I HAVE A HOLIDAY RAMBLER VACATIONER MOTOR HOME WITH A WORKHORSE CHASSIS THERE IS A RECALL NHTSA # 06V22700 FOR AN INSTRUMENT CLUSTER PANEL, WHICH WAS REPLACED ON MY VEHICLE, THAT CONTINUES TO BLANK OUT INTERMINTANTLY CAUSING THE PANEL TO GO DARK AT NIGHT, BUZZING ALARM, AND ALL THE GUAGES TO RESET. I HAVE CALLED WORKHORSE 3/2/07 TO REPORT THAT THE CONDITION CONTINUES, BUT THEY STATED THAT THEY ARE STILL WORKING ON A FIX. IT IS THREE YEARS SINCE THE CONDITION STARTED HOW LONG ARE WE TO WAIT? IS IT POSSIBLE THAT THE REPLACEMENT PANEL WAS ALSO BAD? CAN THE NHTSA BOARD HELP ME WITH THIS MATTER? THANK YOU FOR YOUR CONSIDERATION. *JB

NHTSA ODI #10184040

100 miles · Jun 25, 2006
Electrical System

SINCE TAKING DELIVERY IN APRIL 2004, PERIODICALLY INSTRUMENT PANEL FAILS FOR SHORT PERIODS. ALL GAUGES GO TO ZERO AND ALL WARNING LIGHTS COME ON AND REMAIN IN THIS STATE FOR 5 - 45 SECONDS. MY WIFE PANICKED THE LAST TIME AND ALMOST CRASHED INTO A GUARD RAIL. WORKHORSE REPROGRAMMED COMPUTER MODULE TWICE (THERE WAS A RECALL INVOLV…

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SINCE TAKING DELIVERY IN APRIL 2004, PERIODICALLY INSTRUMENT PANEL FAILS FOR SHORT PERIODS. ALL GAUGES GO TO ZERO AND ALL WARNING LIGHTS COME ON AND REMAIN IN THIS STATE FOR 5 - 45 SECONDS. MY WIFE PANICKED THE LAST TIME AND ALMOST CRASHED INTO A GUARD RAIL. WORKHORSE REPROGRAMMED COMPUTER MODULE TWICE (THERE WAS A RECALL INVOLVING BRAKE WARNING LIGHT). THEY THOUGHT THIS WOULD FIX MY PROBLEM, BUT IT DID NOT. THEY HAVE REPORTED TO ME FOR THE LAST TWO YEARS THAT THEY ARE WORKING ON A FIX. DATE IS LAST INSTANCE, BUT IT HAPPENS ON EVERY TRIP AT LEAST ONCE. AT A RECENT GATHERING OF OWNERS ABOUT 20 PEOPLE ACKNOWLEDGED THAT THEY ARE HAVING THE PROBLEM. *NM

NHTSA ODI #10160691

15,235 miles · May 5, 2006
Fuel System, Gasoline

FRONT ENGINE GASOLINE POWERED MOTORHOME WAS IN SERVICE SHOP FOR LEAKING REAR AXLE HUB. AFTER THAT WAS FIXED, SHOP OWNER WAS MOVING UNIT WHEN SIGNIFICANT FUEL WAS OBSERVED LEAKING FROM ENGINE AREA (FRONT OF UNIT) ONTO THE GROUND. FUEL ALSO SOAKED THE CARPET NEAR THE DRIVER AND DRIVER'S FOOT BECAME WET WITH GASOLINE. FUEL LEAKED…

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FRONT ENGINE GASOLINE POWERED MOTORHOME WAS IN SERVICE SHOP FOR LEAKING REAR AXLE HUB. AFTER THAT WAS FIXED, SHOP OWNER WAS MOVING UNIT WHEN SIGNIFICANT FUEL WAS OBSERVED LEAKING FROM ENGINE AREA (FRONT OF UNIT) ONTO THE GROUND. FUEL ALSO SOAKED THE CARPET NEAR THE DRIVER AND DRIVER'S FOOT BECAME WET WITH GASOLINE. FUEL LEAKED DUE TO RETAINING CLIP FAILURE ON FUEL PRESSURE REGULATOR LOCATED ON TOP OF ENGINE ON DRIVER'S SIDE. AS A RESULT, HIGH PRESSURE FUEL FROM FUEL INJECTION SYSTEM WAS ALLOWED TO FLOW FREELY OVER THE ENGINE AND SPRAYED THE UNDERSIDE OF THE MOTORHOME WITH SOME FUEL ENTERING THE MOTORHOME WHERE THE ENGINE COVER MEETS THE FLOOR OF THE MOTORHOME. FUEL REGULATOR AND RETAINING CLIP REPLACED. ADDITIONAL DETAILS CAN BE VIEWED HERE: HTTP://IRV2.INFOPOP.CC/GROUPEE/FORUMS/A/TPC/F/8626012545/M/9871080422/P/1. *NM

NHTSA ODI #10156829

16,045 miles · Mar 13, 2006
Service Brakes, Hydraulic

ON 9 MAR 2006 I WAS TRAVELING ON LA HIGHWAY 128 ENROUTE TO WINNSBORO, LA IN MY 24' 2004 WINNEBAGO MOTORHOME BUILT ON A WORKHORSE CHASSIS. TIME OF DAY WAS AROUND 7:30 AM, ROAD WAS DRY AND FLAT. TEMPERATURE WAS PROBABLY IN HIGH 60'S (DEG F) TO LOW 70'S. I HAD ENGAGED CRUISE CONTROL AT 50 MPH AND OVERDRIVE WAS ENGAGED. WITHOUT…

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ON 9 MAR 2006 I WAS TRAVELING ON LA HIGHWAY 128 ENROUTE TO WINNSBORO, LA IN MY 24' 2004 WINNEBAGO MOTORHOME BUILT ON A WORKHORSE CHASSIS. TIME OF DAY WAS AROUND 7:30 AM, ROAD WAS DRY AND FLAT. TEMPERATURE WAS PROBABLY IN HIGH 60'S (DEG F) TO LOW 70'S. I HAD ENGAGED CRUISE CONTROL AT 50 MPH AND OVERDRIVE WAS ENGAGED. WITHOUT WARNING THE STEERING COLUMN BEGAN TO VIOLENTLY SHAKE, THE ALLISON 1000 TRANSMISSION SLIPPED OUT OF OD INTO 3D GEAR AND THEN IMMEDIATELY SHIFTED INTO 2D GEAR. CRUISE CONTROL REMAINED ENGAGED. ENGINE SPEED REMAINED AT ABOUT 1500-1800 RPM BUT ROAD SPEED DROPPED TO NEARLY 0 MPH. AFTER SHUTTING THE ENGINE DOWN I SMELLED AN ODOR OF HOT METAL. I INSPECTED THE COACH INSIDE AND OUTSIDE BUT DID NOT FIND ANY VISIBLE SMOKE OR FLAME. I RETURNED TO THE COACH, RESTARTED THE ENGINE, AND PROCEEDED WITHOUT FURTHER DIFFICULTY. DURING THE ABOVE DESCRIBED ACTION THE COACH DID NOT PULL EITHER RIGHT OR LEFT, AND THERE WERE NO ALARMS, EITHER VISUAL OR AURALLY FROM THE DISPLAY LANEL. THIS LEADS ME TO BELIEVE THAT THE FRONT LEFT AND RIGHT DISK BRAKES CLOSED ON THE ROTORS EQUALLY, CAUSING THE COACH TO COME TO A STRAIGHT-LINE STOP. I HAVE READ OF PREVIOUS MODELS (2002 AND PERHAPS 2003) OF THIS SAME CHASSIS EQUIPPED WITH BOSCH CALIPERS HAVING BRAKE PROBLEMS RESULTING IN FIRES AND OTHER SERIOUS DAMAGE TO THE VEHICLE. I NOW BELIEVE THAT THIS PROBLEM IS SURFACING ONCE AGAIN, THIS TIME IN THE 2004 WORKHORSE CHASSIS. A CALL TO THE MANUFACTURER RESULTED IN NO OFFER OF A POSSIBLE CAUSE, OR OTHER ADVICE.*JB

NHTSA ODI #10152630

1,777 miles · Jul 29, 2005
Suspension

2004 SOUTHWIND MOTORHOME (BY FLEETWOOD CORP - ON WORKHORSE CHASSIS MODEL W22) VIN [XXX]. FACTORY INSTALLED SHOCK ABSORBERS ON FRONT OF VEHICLE ARE INADEQUATE FOR WEIGHT OF MOTORHOME. WHEN HITTING A BUMP OR DIP IN THE ROAD THE BOUNCING OR PORPOISING IS ALMOST UNCONTROLLABLE. THE WORKHORSE REPRESENTATIVES ARE REPLACING SHOCKS O…

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2004 SOUTHWIND MOTORHOME (BY FLEETWOOD CORP - ON WORKHORSE CHASSIS MODEL W22) VIN [XXX]. FACTORY INSTALLED SHOCK ABSORBERS ON FRONT OF VEHICLE ARE INADEQUATE FOR WEIGHT OF MOTORHOME. WHEN HITTING A BUMP OR DIP IN THE ROAD THE BOUNCING OR PORPOISING IS ALMOST UNCONTROLLABLE. THE WORKHORSE REPRESENTATIVES ARE REPLACING SHOCKS ON MODELS LIKE MINE, BUT REFUSED TO CORRECT THE SITUATION UNLESS I ADD MORE WEIGHT TO THE FRONT END, WHICH IN MY OPINION, DOESN'T MAKE SENSE. *NM UPDATED 07/19/2012 *JS INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI #10130573

Official recalls

2

09V110000 · Service Brakes, Hydraulic

Apr 3, 2009

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.

06V225000 · Engine And Engine Cooling

Jun 20, 2006

ON CERTAIN MOTOR HOME AND TRUCK CHASSIS EQUIPPED WITH GENERAL MOTORS 8.1L V8 ENGINES, IMPROPER HARDENING DURING THE HEAT TREATMENT PROCESS CAN CAUSE THE FUEL RAIL PULSE DAMPER RETAINER CLIP TO FRACTURE, RESULTING IN INADEQUATE RETENTION OF THE DAMPER. IF THE DAMPER BECOMES LOOSE, FUEL COULD BE PUMPED BY THE FUEL PUMP INTO THE UNDER HOOD AREA.

Consequence & remedy

Consequence: IN THE PRESENCE OF AN IGNITION SOURCE, A FIRE COULD RESULT.

Remedy: DEALERS WILL REPLACE THE FUEL RAIL PULSE DAMPER RETAINER CLIPS ON THESE ENGINES FREE OF CHARGE. THE RECALL BEGAN ON SEPTEMBER 1, 2006. OWNERS MAY CONTACT WORKHORSE AT 877-294-6773.

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

1

EA07016 · Overheating Disc Brake Caliper

Opened Nov 16, 2007 · Closed Aug 19, 2009

Status: closed (inferred from source dates) · Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Additional source detail variants (7)

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.