Model year record

2004 MONACO COACH Diplomat

1 recall campaign on file for this model year. 10 owner complaints on file.

Recalls

Recall campaignNHTSA 04V441000

Engine and engine cooling: engine: diesel

Component: Engine and engine cooling: engine: diesel
Manufacturer: MONACO COACH CORPORATION
Vehicles affected: 1,189
Reported to NHTSA: 2004-09-13

Defect description

ON CERTAIN MOTORHOMES EQUIPPED WITH CUMMINS ENGINES, OIL CAN LEAK INTO THE ENGINE COMPARTMENT FROM A CRACK IN THE CUP PLUG.

Safety risk

OIL LEAKAGE ON A HOT ENGINE CAN RESULT IN AN ENGINE COMPARTMENT FIRE, POSSIBLY RESULTING IN INJURIES.

Manufacturer 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.

Owner complaints

A complaint is one person's report to a federal agency. It is not a finding.

Component	Complaints	Median mileage
Electrical system	2	806 mi
Service brakes, hydraulic	2	806 mi
Structure	2	806 mi
Visibility: defroster/defogger/hvac system: heater core	2	2,301 mi
Equipment	1	—
Seats: front assembly: recliner	1	806 mi

The 2005 model has 10 times as many complaints as this one. These figures reflect raw complaint counts, not failure rates. Higher-selling model years naturally receive more complaints.

Safety recall repairs are provided free of charge by franchised dealers, regardless of vehicle age or mileage. This page displays aggregated data for the model year. To check recall status for a specific vehicle, search its VIN at nhtsa.gov.