RoadVitals

2004 Monaco Coach Diplomat

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
4
Latest Oct 18, 2005
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
1
Latest Sep 13, 2004
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
0
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
0

Overview

Our database contains 4 NHTSA owner-reported complaints for the 2004 Monaco Coach Diplomat, most frequently naming the body & structure, brakes and electrical categories. 1 safety recall has been issued covering this model year.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

What owners report

Complaints grouped by the component NHTSA recorded

  • Body & structure220.0%
  • Brakes220.0%
  • Electrical220.0%
  • Visibility220.0%
  • Interior & seats110.0%
  • Other / unspecified110.0%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

1 campaign cover this model year

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
04V441000

ENGINE AND ENGINE COOLING:ENGINE:DIESEL

Sep 13, 2004
1,189 units potentially affected
The defect: ON CERTAIN MOTORHOMES EQUIPPED WITH CUMMINS ENGINES, OIL CAN LEAK INTO THE ENGINE COMPARTMENT FROM A CRACK IN THE CUP PLUG.
The risk: OIL LEAKAGE ON A HOT ENGINE CAN RESULT IN AN ENGINE COMPARTMENT FIRE, POSSIBLY RESULTING IN INJURIES.
The remedy: CUMMINS IS CONDUCTING THE OWNER NOTIFICATION AND REMEDY FOR THIS CAMPAIGN. CUMMINS WILL INSTALL A STEEL CUP PLUG BOSS CAP TO ALL AFFECTED ENGINES. OWNERS SHOULD CONTACT CUMMINS CUSTOMER ASSISTANCE CENTER AT 1-800-343-7357 OR MONACO AT 1-800-685-6545.
MONACO COACH CORPORATIONView on NHTSA.gov

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

Body & structureBrakesElectrical+1 more
Filed Oct 18, 2005

DT: THE CALLER HAS A PROBLEM WITH THE FRONT ROADSIDE SLIDE ON THE MOTOR HOME. THEY HAD IT IN FOR REPAIR 8 DIFFERENT TIMES, AND IT STILL IS NOT FIXED. TO DATE THE ROADSIDE SLIDE IS UNSTABLE. THE SLIDE IS OFF CENTER, AND A PERSON CAN PUT THEIR HAND IN THE BOTTOM OPENING TO THE SIDE. THEREFORE, THE SLIDE RIDES TOO HIGH AND CAUSES A LOUD WIND NOISE, A PERSON IS UNABLE TO HEAR THE TRAFFIC, AND THIS CAUSES DISTRACTION FOR THE DRIVER. ALSO, FEAR OF TURNING A CORNER AND CAUSING AN ACCIDENT. THE CAPTAIN'S DRIVER SEAT IS WOBBLING AT THE PEDESTAL, THE CALLER IS AFRAID THE SEAT WILL FALL OFF. WHEN APPLYING THE BRAKES THE RIGHT REAR SMOKES AND BELLOWS OUT AROUND THE WHEEL. THIS MOTOR HOME GCWR IS 39,300 POUNDS. THIS IS THE REASON WHY THIS MOTOR HOME IS UNSAFE. DIFFERENT DEALERS HAVE TRIED TO FIX THE ROADSIDE SLIDE, BUT NO ONE HAS BEEN ABLE TO DO SO. MANUFACTURER OFFERED THEM ANOTHER MOTOR HOME IF SHE PAID THE DIFFERENCE. THEY OFFERED THEM $5000.00 TO BRING IT TO ELKHART, INDIANA FOR REPAIRS. THE CALLER HAS HAD IT THERE TWO OTHER TIMES FOR THE SAME PROBLEM. THE CALLER SAID THE WORK WAS POORLY DONE UNDER THE WARRANTY. CALLER BELIEVES THIS IS A MANUFACTURER'S DEFECT. THE CALLER HAS HAD NUMEROUS ELECTRICAL PROBLEMS WITH MOTOR HOME.*AK *JB

NHTSA ID
10134035
Incident
Apr 5, 2004
Mileage
806 mi
Visibility
Filed Jun 5, 2005

DEFROSTER NOT WORKING WINDSHIELDD ICED OVER WHEN DRIVING FROM SNOW. WHEN STOPED DEFROSTER WILL OUTPUT ENOUGH HEAT TO MELT ICE. HEATER DEFROSTER IS SUB STANDARD INSUFFICIENT HOT WATER FLOW FROM REAR MOUNTED DIESEL ENGINE TO HEATER CORE ABOUT 37FT.

NHTSA ID
10124244
Incident
Jan 26, 2005
Mileage
5,152 mi
Visibility
Filed May 26, 2005

DEFROSTER NOT WORKING WINDSHIELD ICED OVER WHEN DRIVING FROM SNOW AND FREEZING RAIN.WHEN STOPED DEFROSTER WILL OUTPUT ENOUGH HEAT TO MELT ICE. HEATER DEFROSTER IS SUB STANDARD.

NHTSA ID
10122259
Incident
Dec 25, 2004
Mileage
2,301 mi
Body & structureBrakesElectrical+1 more
Filed Mar 25, 2005

DIPLOMAT 40PDQ 2004 MOTOR HOME, THE SLIDE WAS OFF CENTER AND STRIPS WERE NOT LINED UP PROPERLY. *BF THE SLIDE RIDES TO HIGH AND CAUSES SO MUCH WIND NOISE THAT THE CONSUMER WAS UNABLE TO HEAR OUTSIDE TRAFFIC. A GAP UNDER THE WINDOW ALLOWED WATER TO COMING INTO THE COACH. THE CAPTAIN DRIVER SEAT STARTED COMING APART AT THE PEDESTAL. WHEN APPLYING THE BRAKES SMOKE BILLOWED FROM THE REAR PASSENGER'S SIDE WHEEL. THE AIR CONDITIONER/HEAT PUMP KICKED THE CIRCUIT BREAKER. THE WINDSHIELD LEAKED IN THE CENTER ONTO THE DASH. CB GROUND PROBLEM. THE WASHER AND DRYING DID NOT WORK PROPERLY. THE HOLDING TANK WOULD NOT REGISTER PROPERLY. MANY ATTEMPTS HAVE BEEN MADE TO REPAIR THE COACH BUT NONE HAVE BEEN SUCCESSFUL. THE CONSUMER WOULD LIKE A FULL REFUND OF ALL MONEY PLUS ATTORNEY FEES OR A NEW COACH. NM

NHTSA ID
10115850
Incident
Feb 23, 2005

Compare model years

Complaint and recall counts across every year of this model

Monaco Coach Diplomat by model year
YearComplaintsRecallsInvestigationsIssue Index
2013000—
2011140—
2010150—
2009110—
2008220—
2007130—
2006430—
2005120—
2004Viewing410—
2002210—
2001640—
20001420—
19991030—
1998130—

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.