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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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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

Service Brakes, Hydraulic complaints

74 reports
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23,022 miles · Jul 6, 2023
Service Brakes, Hydraulic

The contact owns a 2004 Workhorse W22. The contact stated that after the RV was stored for several years, the contact learned that the brakes had seized. The contact then became aware that the RV was included in a recall. The RV was taken to the dealer and repaired under NHTSA Campaign Number: 09V110000 (Service Brakes, Hydrauli…

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The contact owns a 2004 Workhorse W22. The contact stated that after the RV was stored for several years, the contact learned that the brakes had seized. The contact then became aware that the RV was included in a recall. The RV was taken to the dealer and repaired under NHTSA Campaign Number: 09V110000 (Service Brakes, Hydraulic) however, the RV experienced brake failure. The contact stated that after the repair due, to personal issues, he was unable to use the RV for several months. The contact stated that he recently started driving the RV around the property and locally; however, he became aware of brake fluid leaking underneath the RV. There was no warning light illuminated. The contact had not taken the RV to the dealer. The manufacturer was not made aware of the failure. The approximate failure mileage was 23,022.

NHTSA ODI #11530594

30,000 miles · Sep 7, 2022
Service Brakes, Hydraulic

The contact owns a 2004 Newmar Kountry built on a 2004 Workhorse W22 chassis. The contact stated while driving 70 MPH, the brake pedal was depressed but failed to respond as needed. The contact was able to continue driving. The vehicle was taken to an independent mechanic on four occasions where the brake pads were replaced four…

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The contact owns a 2004 Newmar Kountry built on a 2004 Workhorse W22 chassis. The contact stated while driving 70 MPH, the brake pedal was depressed but failed to respond as needed. The contact was able to continue driving. The vehicle was taken to an independent mechanic on four occasions where the brake pads were replaced four times however, the failure persisted. The contact stated while driving on a wet road surface and attempting to make a stop at the stop sign, the vehicle slid into a ditch. The contact did not sustain any injuries. The contact was able to pull the RV out of the ditch with the assistance of a four-wheel drive vehicle. The contact’s friend, an independent mechanic, arrived at the scene and diagnosed that the brake calipers had seized, causing the brakes to overheat while driving. Additionally, the independent mechanic diagnosed that the brake rotors needed to be replaced. The mechanic performed an unknown service on the brakes which allowed the contact to drive to his residence. However, the failure reoccurred and the brake pedal was smoking. The contact became aware that the VIN was included in NHTSA Campaign Number: 09V110000 (Service Brakes, Hydraulic). The manufacturer was notified of the failure and referred the contact to the dealer for assistance. The dealer informed the contact that they needed to verify that the manufacturer would cover the recall repair prior to assisting. The contact contacted other unknown dealers who declined to assist. The vehicle was not repaired. The failure mileage was approximately 30,000.

NHTSA ODI #11483385

21,960 miles · Apr 3, 2018
Service BrakesService Brakes, Hydraulic

2004 CHEVROLET GULF STREAM. CONSUMER WRITES IN REGARDS TO BRAKE SYSTEM RECALL REPAIR ISSUES - RIGHT FRONT CALIPER/ABS SENSOR REPLACEMENTS. *SMD *TR

NHTSA ODI #10917053

Mileage unknown · Nov 4, 2011
Service Brakes, Hydraulic

2004 GEORGIE BOY CRUISE MASTER CLASS A MOTOR HOME ON A 2004 WORKHORSE CHASSIS. CONSUMER WRITES IN REGARDS TO PROBLEM WITH BRAKES *TGW THE CONSUMER STATED THE PROBLEM FIRST BEGAN IN SEPTEMBER 2007, WHEN THE BRAKES BEGAN OVERHEATING AND SMOKING. THE CONSUMER HAD THE RV TOWED . WORKHORSE PAID PART OF THE BILL BECAUSE THE RV WAS ST…

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2004 GEORGIE BOY CRUISE MASTER CLASS A MOTOR HOME ON A 2004 WORKHORSE CHASSIS. CONSUMER WRITES IN REGARDS TO PROBLEM WITH BRAKES *TGW THE CONSUMER STATED THE PROBLEM FIRST BEGAN IN SEPTEMBER 2007, WHEN THE BRAKES BEGAN OVERHEATING AND SMOKING. THE CONSUMER HAD THE RV TOWED . WORKHORSE PAID PART OF THE BILL BECAUSE THE RV WAS STILL UNDER WARRANTY. IN AUGUST 2009, THE BRAKES FAILED AND THE RV WOULD NOT STOP. THE RV WAS TOWED AGAIN, WHERE THE BRAKING SYSTEM WAS REPAIRED. IN SEPTEMBER 2010, THE CONSUMER RECEIVED A RECALL LETTER FROM WORKHORSE REGARDING A PROBLEM WITH THE BRAKES. THE CONSUMER TOOK THE RV TO A REPAIR FACILITY TO HAVE IT INSPECTED. THE RV FAILED INSPECTION, DUE TO THE BRAKING SYSTEM OVERHEATING AND SMOKING. THE CONSUMER CONTACTED WORKHORSE WHILE AT THE REPAIR FACILITY AND WORKHORSE REFUSED TO ABSORB THE COST OF HAVING THE RV TOWED TO AN AUTHORIZED SERVICE CENTER. THE CONSUMER INFORMED WORKHORSE, THE BRAKES WERE OVERHEATING AND SMOKING AND HE WOULD NOT BE ABLE TO DRIVE IT. A REPRESENTATIVE FROM THE REPAIR SHOP INFORMED WORKHORSE IT WAS THEIR RESPONSIBILITY TO HAVE THE RV TOWED. WORKHORSE DECIDED TO PAY FOR THE TOWING. REPAIRS WERE ONLY MADE TO THE CALIPERS. IN JULY 2011, THE RV WOULD NOT STOP AND WENT OUT OF CONTROL ON THE INTERSTATE, FORCING THE CONSUMER OFF THE HIGHWAY. THE CONSUMER CONTACTED WORKHORSE AGAIN, TO INFORM THEM OF THE BRAKE FAILURE AND THEY REFUSED TO HAVE THE RV TOWED OR PAY FOR ANY OF THE REPAIRS. *JB

NHTSA ODI #10434590

Mileage unknown · Apr 26, 2011
Service Brakes, Hydraulic

2005 DAMON CHALLENGER RV ON A 2004 W22 WORKHORSE CHASSIS. CONSUMER STATES THE HYDRAULIC BRAKE LINE IS IN CONTACT WITH THE EXHAUST SYSTEM ON BOTH SIDES OF THE UNIT (REAR AXLE) *TGW

NHTSA ODI #10397748

Mileage unknown · Jan 31, 2011
Service Brakes, Hydraulic

CONSUMER STATES THAT HIS 2004 DAMON INTRUDER ON A 2004 W22 WORKHORSE CUSTOM CHASSIS EXPERIENCED THE CALIPER DEFECTS RESULTING IN SAFETY RECALL 50901-C. CONSUMER REQUESTS REIMBURSEMENT FOR REPLACEMENT CALIPERS. *TGW THE CONSUMER STATED THE BRAKES OVERHEATED TO THE POINT THAT A SEVERE WOBBLE HAD DEVELOPED IN THE FRONT WHEELS AND …

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CONSUMER STATES THAT HIS 2004 DAMON INTRUDER ON A 2004 W22 WORKHORSE CUSTOM CHASSIS EXPERIENCED THE CALIPER DEFECTS RESULTING IN SAFETY RECALL 50901-C. CONSUMER REQUESTS REIMBURSEMENT FOR REPLACEMENT CALIPERS. *TGW THE CONSUMER STATED THE BRAKES OVERHEATED TO THE POINT THAT A SEVERE WOBBLE HAD DEVELOPED IN THE FRONT WHEELS AND WAS CAUSING THE STEERING WHEEL TO OSCILLATE. THE CONSUMER STATED THE REPAIRS COST $ 3,089.49 OF WHICH $1,751.10 WAS REIMBURSED BY WORKHORSE. THE CONSUMER IS REQUESTING THE REMAINING OF THE REPAIR BILL. *JB

NHTSA ODI #10378882

694 miles · Jan 26, 2011
Service Brakes, Hydraulic

TL*THE CONTACT OWNS A 2004 FLEETWOOD BOUNDER. THE CONTACT STATED THAT THE WHEN THE BRAKES WERE ENGAGED THEY WOULD SURGE. THE VEHICLE WAS TAKEN TO A LOCAL MECHANIC WHO STATED THAT THE REAR ROTORS NEEDED TO BE SERVICED AGAIN. THE MANUFACTURER WAS CONTACTED AND THEY WERE NOT WILLING TO OFFER ANY ASSISTANCE BECAUSE THE VEHICLE WAS …

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TL*THE CONTACT OWNS A 2004 FLEETWOOD BOUNDER. THE CONTACT STATED THAT THE WHEN THE BRAKES WERE ENGAGED THEY WOULD SURGE. THE VEHICLE WAS TAKEN TO A LOCAL MECHANIC WHO STATED THAT THE REAR ROTORS NEEDED TO BE SERVICED AGAIN. THE MANUFACTURER WAS CONTACTED AND THEY WERE NOT WILLING TO OFFER ANY ASSISTANCE BECAUSE THE VEHICLE WAS NOT UNDER WARRANTY. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 696 AND THE CURRENT MILEAGE WAS 35,000. UPDATED 3/7/11 *CN UPDATED 03/14/11

NHTSA ODI #10378801

Mileage unknown · Jan 25, 2011
Service Brakes, Hydraulic

2004 SOUTHWIND MOTORHOME ON A 2004 WORKHORSE W22 CHASSIS. CONSUMER STATES THAT IT IS INVOLVED IN THE WORKHORSE RECALL FOR DEFECT WITH BOSCH BRAKES. HE STATES THAT HE HAD TO GET A COMPLETE BRAKE JOB. CONSUMER WOULD LIKE REIMBURSEMENT FOR REPAIRS. *KB ALL FOUR ROTORS WERE CRACKED AND HAD TO BE REPLACED. THE CONSUMER WAS DENIED R…

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2004 SOUTHWIND MOTORHOME ON A 2004 WORKHORSE W22 CHASSIS. CONSUMER STATES THAT IT IS INVOLVED IN THE WORKHORSE RECALL FOR DEFECT WITH BOSCH BRAKES. HE STATES THAT HE HAD TO GET A COMPLETE BRAKE JOB. CONSUMER WOULD LIKE REIMBURSEMENT FOR REPAIRS. *KB ALL FOUR ROTORS WERE CRACKED AND HAD TO BE REPLACED. THE CONSUMER WAS DENIED REIMBURSEMENT BASED ON THE BRAKE PROBLEM BEING CAUSED BY FATIGUE. *JB

NHTSA ODI #10379068

Mileage unknown · Jan 14, 2011
Service Brakes, Hydraulic

2004 DOLPHIN MOTOR HOME ON A 2004 WORKHORSE W22 CHASSIS. CONSUMER FEELS THAT BECAUSE OF THE DEFECTIVE CALIPERS HE SHOULD NOT HAVE TO INCUR THE REPAIR EXPENSE, SINCE HE RECEIVED A RECALL NOTICE. *TGW THE CONSUMER STATED IT WAS DISCOVERED THAT ALL FOUR CALIPERS WERE DEFECTIVE, WHICH CAUSED THE PISTONS TO HOLD THE BRAKE PADS OUT …

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2004 DOLPHIN MOTOR HOME ON A 2004 WORKHORSE W22 CHASSIS. CONSUMER FEELS THAT BECAUSE OF THE DEFECTIVE CALIPERS HE SHOULD NOT HAVE TO INCUR THE REPAIR EXPENSE, SINCE HE RECEIVED A RECALL NOTICE. *TGW THE CONSUMER STATED IT WAS DISCOVERED THAT ALL FOUR CALIPERS WERE DEFECTIVE, WHICH CAUSED THE PISTONS TO HOLD THE BRAKE PADS OUT AND RUB, WHICH GENERATED HEAT. THE HEAT CAUSED ALL FOUR ROTORS TO CRACK, WHICH IN TURN WORE OUT THE DISC PADS. *JB

NHTSA ODI #10375852

Mileage unknown · Jan 12, 2011
Service Brakes, Hydraulic

2004 WORKHORSE W22 CHASSIS. CONSUMER STATES THE RIGHT REAR BRAKE ROTOR FROZE CAUSING A BURNING SMELL. SENT THE COACH IN FOR REPAIR AND WAS CHARGED FOR THE REPAIR. HE FEELS THAT THE FAILURE WAS A CAUSE FROM THE RECALL. *KB THE CONSUMER STATED A WEEK AFTER THE RV WAS INSPECTED, THE ABS LIGHT ILLUMINATED. THE CONSUMER WAS CHARGE…

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2004 WORKHORSE W22 CHASSIS. CONSUMER STATES THE RIGHT REAR BRAKE ROTOR FROZE CAUSING A BURNING SMELL. SENT THE COACH IN FOR REPAIR AND WAS CHARGED FOR THE REPAIR. HE FEELS THAT THE FAILURE WAS A CAUSE FROM THE RECALL. *KB THE CONSUMER STATED A WEEK AFTER THE RV WAS INSPECTED, THE ABS LIGHT ILLUMINATED. THE CONSUMER WAS CHARGED FOR THE REPLACEMENT OF THE ABS SENSOR, ROTORS, PADS AND CALIPERS. *JB

NHTSA ODI #10375777

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.