The 1998 Monaco Coach Diplomat has 3 NHTSA recall campaigns affecting an estimated 619 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 1 complaint with NHTSA, most often about the visibility. Last updated July 5, 2026.
Recall campaigns
EQUIPMENT03V1660002003-05-08
Defect
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
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.
EQUIPMENT03V1020002003-03-17221 affected
Defect
ON CERTAIN MOTOR HOMES, THE PSI RECORDED ON THE FEDERAL CERTIFICATION LABEL IS INCORRECT. THE INITIAL LABEL SHOWS PSI AS 90 LBS FRONT AND 100 REAR. THE CORRECT INFORMATION SHOULD BE A PSI OF 105 FRONT AND 115 REAR.
Consequence
THESE VEHICLES DO NOT COMPLY WITH THE REGULATIONS.
Remedy
DEALERS WILL INSTALL A CORRECTED LABEL ON THESE MOTOR HOMES. OWNER NOTIFICATION BEGAN ON APRIL 28, 2003. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE LABEL WITHIN A REASONABLE TIME SHOULD CONTACT MONACO AT 1-877-466-8226.
VEHICLE DESCRIPTION: MOTOR HOMES BUILT ON A ROADMASTER CHASSIS. INADEQUATE BRACING WAS USED TO SECURE THE FUEL TANK. THE BRACE COULD FAIL ALLOWING ONE END OF THE FUEL TANK TO LOOSEN FROM ITS POSITION AND HANG LOWER THAN THE OTHER END.
Consequence
THE FUEL TANK COULD EVENTUALLY SEPARATE FROM THE VEHICLE AND DROP TO THE GROUND, INCREASING THE RISK OF PERSONAL INJURY OR A VEHICLE CRASH.
Remedy
DEALERS WILL INSTALL AN ADDITIONAL BRACE UNDER THE FUEL TANK.
Complaints by component
VISIBILITY:WINDSHIELD
1
Total complaints1
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“Consumer states the windsheild went off track and left a large openning in the windsheild. Took to dealership to have windsheild re-set, problem happened again.*jb”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1998 Monaco Coach Diplomat as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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