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: 2 of 10 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.
Visibility. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Equipment. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Fuel System, Gasoline. Review the 2 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 reports0 fire reports0 injury reports
What owners actually said
10 reports
40,437 miles · Aug 10, 2009
Unknown Or Other
TL*THE CONTACT OWNS A 1999 MONACO COACH DIPLOMAT RV. THE CONTACT STATED THAT THE RV HAS A FUNGUS INFECTION NAMED COPRINUS BASIDIOMYCETES MOLD, WHICH IS DETRIMENTAL TO HIS HEALTH. THE MOLD HAS INFECTED THE ENTIRE RV AND HAS CIRCULATED IN THE AIR AND THE CARPET. AN EXPERT INSPECTED THE VEHICLE AND FILED A REPORT. THE CONTACT W…
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TL*THE CONTACT OWNS A 1999 MONACO COACH DIPLOMAT RV. THE CONTACT STATED THAT THE RV HAS A FUNGUS INFECTION NAMED COPRINUS BASIDIOMYCETES MOLD, WHICH IS DETRIMENTAL TO HIS HEALTH. THE MOLD HAS INFECTED THE ENTIRE RV AND HAS CIRCULATED IN THE AIR AND THE CARPET. AN EXPERT INSPECTED THE VEHICLE AND FILED A REPORT. THE CONTACT WAS UNAWARE OF THE MOLD WHEN HE PURCHASED THE VEHICLE. HE WAS IGNORED BY THE DEALER AND THE MANUFACTURER CONCERNING THIS ISSUE. HE WAS ADVISED TO CALL THE EPA AND THE FTC IN REGARDS TO THIS MATTER. THE FAILURE MILEAGE WAS 40,437.
NHTSA ODI #10279879
Mileage unknown · Jan 5, 2004
EquipmentTires
RECALL RECEIVED FOR THE WRONG PSI ON THE ORIGINAL TAG FOR TIRE EQUIPMENT/ VEHICLE SUFFERED TIRE BLOWOUT.*MR THE CONSUMER RECEIVED RECALL 03V386000 WHICH INDICATED THAT THE WRONG PSI WAS PUT ON THE ORIGINAL ID TAG. THE CONSUMER CONTACTED THE LOCAL DEALER BUT THEY REFUSED TO HANDLE THE RECALL BECAUSE THE VEHICLE WASN'T PURCHASED…
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RECALL RECEIVED FOR THE WRONG PSI ON THE ORIGINAL TAG FOR TIRE EQUIPMENT/ VEHICLE SUFFERED TIRE BLOWOUT.*MR THE CONSUMER RECEIVED RECALL 03V386000 WHICH INDICATED THAT THE WRONG PSI WAS PUT ON THE ORIGINAL ID TAG. THE CONSUMER CONTACTED THE LOCAL DEALER BUT THEY REFUSED TO HANDLE THE RECALL BECAUSE THE VEHICLE WASN'T PURCHASED THERE. AFTER RECEIVING THE RECALL NOTICE THE CONSUMER'S RV HAD A SUDDEN BLOWOUT ON THE RIGHT REAR TIRE. THE MANUFACTURER WAS CONTACTED AND INFORMED THE CONSUMER THAT HAVING THE TIRE PRESSURE AT THE RECOMMENDED PRESSURE DID NOT CAUSE THE BLOWOUT ALTHOUGH THAT'S NOT WHAT THE RECALL STATED. *NM
NHTSA ODI #10053543
Mileage unknown · Sep 23, 2003
Service Brakes, Air
WHILE DRIVING 65 MPH, THE AIR DRYER ON THE AIR BRAKES HAD BLOWN APART WHICH CAUSED THE BRAKES TO LOSE POWER. THE DRIVER WAS ABLE TO AVOID A COLLISION AND THE MOTOR HOME WAS TOWED TO THE RESIDENCE. *AK *SCC *JB
NHTSA ODI #10033879
36,000 miles · Apr 21, 2003
Fuel System, Diesel
FUEL TANK LEAK. *JB
NHTSA ODI #10016258
Mileage unknown · Apr 23, 2002
Tires
CONSUMER STATES THAT TIRE IS HAVING BAD RIVETING PROBLEMS, WHILE DRIVING TIRE EXPERIENCED A BLOWOUT, ALMOST CAUSING CONSUMER TO LOSE CONTROL, THE TIRE ALSO BLEWOUT LEFT FRONT AIR BAG AND DAMAGED THE VEHICLE, GOODYEAR G159, 225/70R22.5, DOT MC55. *SLC
NHTSA ODI #785967
Mileage unknown · Jan 15, 2002
Fuel System, Gasoline
WHILE DRIVING FUEL WAS LEAKING FROM THE VEHICLE, IT WAS LEAKING ONTO ONCOMING TRAFFIC. CONTACTED DEALER ,AND DEALER REPLACED FUEL TANK. FUEL TANK HAS BEEN REPLACED TWICE ALREADY. *AK
NHTSA ODI #8002231
Mileage unknown · Oct 11, 2001
Visibility
WINDSHIELD HAS POOR VISIBILTY. DEALER HAS BEEN CONTACTED FOR PROBLEM, AND LABELED IT UNSAFE. PLEASE PROVIDE FURTHER DETAILS.*AK
NHTSA ODI #897603
Mileage unknown · Apr 3, 2000
Service Brakes, Hydraulic
WHILE DRIVING FRONT END SHAKES, PULLS TO RIGHT AND IT IS DIFFICULT TO STOP SAFELY. ALSO, BRAKES MAKE A LOUD KNOCKING NOISE, AND A SEVERE SHAKE. *AK
NHTSA ODI #859599
Mileage unknown · Aug 30, 1999
Electrical SystemEquipmentFuel System, Gasoline
WINDSHIELD POPPING OUT AND RESULTING IN LEAKAGE, FIXED PROBLEM HOWEVER CONTINUED TO FAIL. MJS
NHTSA ODI #548213
Mileage unknown · Jun 23, 1999
Visibility
WINDSHIELD POPS OUT OF MOTORHOME IN MIDDLE WHERE THE MOULDING IS. THIS IS THE FOURTH TIME THIS HAS HAPPENED. DEALER IS NOT ABLE TO CORRECT THIS PROBLEM. PLEASE PROVIDE ANY FURTHER DETAILS. *AK
MONACO IS RECALLING CERTAIN MOTOR HOMES EQUIPPED WITH NORCOLD REFRIGERATORS. A FATIGUE FAILURE IN THE SECTION OF THE COOLING UNIT WHICH CONTAINS THE REFRIGERANT COULD ALLOW THE LIQUID SOLUTION TO SLOWLY LEAK.
Consequence & remedy
Consequence: EXTENDED OPERATION OF A LEAKING COOLING UNIT COULD LEAD TO A FIRE FROM GAS WHICH MIGHT ESCAPE.
Remedy: MONACO IS WORKING WITH NORCOLD TO REPAIR THESE REFRIGERATORS. NORCOLD WILL PROVIDE THERMAL SWITCH KITS TO OWNERS ALONG WITH THE NECESSARY FORMS AND INSTRUCTIONS. THE RECALL BEGAN ON AUGUST 29, 2008. OWNERS MAY CONTACT NORCOLD AT 1-800-767-9101 OR MONACO AT 1-800-685-6545.
ON CERTAIN MOTOR HOMES, THE FEDERAL IDENTIFICATION TAG ON BOTH 36' AND 38' MODELS WAS INCORRECT. THE INITIAL TAG SHOWS THE PSI AS 90 LBS. FRONT AND 100 LBS. REAR. THE CORRECT PSI IS 105 FRONT AND 115 REAR. ALSO, THE FEDERAL IDENTIFICATION TAG ON CERTAIN UNITS INCORRECTLY STATES THAT THE UNIT WAS BUILT WITH A TAG AXLE.
Consequence & remedy
Consequence: DRIVING THE MOTOR HOME WITH UNDER/OVER INFLATED TIRES CAN CAUSE OR CONTRIBUTE TO PREMATURE TIRE FAILURE, POSSIBLY RESULTING IN A SUDDEN BLOWOUT OR OTHER FAILURE THAT COULD RESULT IN THE LOSS OF CONTROL OF THE MOTOR HOME.
Remedy: OWNERS WILL BE PROVIDED WITH A CORRECT FEDERAL IDENTIFICATION TAG AND INSTALLATION INSTRUCTIONS. OWNER NOTIFICATION BEGAN OCTOBER 24, 2003. OWNERS SHOULD CONTACT MONACO AT 1-800-685-6545.
ON CERTAIN MOTORHOMES, FIFTH WHEELS AND TRAVEL TRAILERS EQUIPPED WITH NORCOLD REFRIGERATOR COOLING UNITS MODEL NUMBERS 1200LR AND 1200RIM, THESE REFRIGERATORS CAN EXPERIENCE LOW CYCLE FATIGUE FAILURE WHICH CAN LEAD TO THE LIQUID SOLUTION SLOWLY LEAKING FROM THE SEALED, PRESSURIZED COOLING UNIT THROUGH A SMALL CRACK.
Consequence & remedy
Consequence: IF A LEAK OCCURS AND THE UNIT IS CONTINUALLY OPERATED, HYDROGEN GAS MAY BE EXPELLED AND CAN BE IGNITED, RESULTING IN A FIRE, POSSIBLY CAUSING SERIOUS INJURY OR DEATH.
Remedy: NORCOLD WILL NOTIFY ITS CUSTOMERS AND PROVIDE A REPLACEMENT COOLING UNIT FREE OF CHARGE. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT NORCOLD SERVICE CENTER AT 1-800-667-3005 OR MONACO AT 574-862-7211.
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.
1999 Monaco Coach Diplomat Problems, Complaints & Recalls | Skip That Year
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