RoadVitals

2005 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.
1
Latest Apr 18, 2012
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.
2
Latest Dec 23, 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.
1

Overview

Our database contains 1 NHTSA owner-reported complaint for the 2005 Monaco Coach Diplomat, most frequently naming the electrical category. 2 safety recalls have been issued covering this model year; and 2 manufacturer communications are on file.

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

  • Electrical1100.0%

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

2 campaigns 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
04V598000

EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:LPG SYSTEMS:WATER HEATER

Dec 23, 2004
86 units potentially affected
The defect: ON CERTAIN MOTOR HOMES, THE WATER HEATER EXHAUST ON THE CURVE SIDE WALL UNDER THE BACK SIDE OF THE KITCHEN SLIDEOUT ROOM BOX TERMINATES UNDER THE SLIDE BOX WHEN IN THE EXTENDED POSITION. THIS DESIGN COULD CREATE A RISK OF MIGRATION OF CARBON MONOXIDE INTO THE INTERIOR OF THE MOTOR HOME.
The risk: EXPOSURE OF THE OCCUPANTS TO CARBON MONOXIDE COULD RESULT IN INJURY OR DEATH.
The remedy: DEALERS WILL REPLACE THE WATER HEATER WITH A 16 GALLON ATWOOD UNIT THAT HAS A DIFFERENT EXHAUST TERMINATION. THE RECALL BEGAN MARCH 25, 2005. OWNERS SHOULD CONTACT MONACO AT 1-800-685-6545.
MONACO COACH CORPORATIONManufacturer number R04047View 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

Electrical
Filed Apr 18, 2012
Fire reported

TL* THE CONTACT OWNS A 2005 MONACO COACH DIPLOMAT. WHILE EXAMING THE VEHICLE, THE CONTACT NOTICED THAT THE TRANSFER SWITCH HAD BURNED. THE VEHICLE WAS TAKEN TO A LOCAL DEALER, WHERE THE SURGE PROTECTOR WAS REPLACED. THE FAILURE AND CURRENT MILEAGES WERE 33,000.

NHTSA ID
10455639
Incident
Nov 9, 2011
Mileage
33,000 mi

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

08-04-02

ENGINE AND ENGINE COOLING:ENGINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL

MONACO COACH CORPORATION HAS BEEN ADVISED THAT CUMMINS INC. HAS INITIATED A SERVICE CAMPAIGN BULLETIN C0805 PERTAINING TO CERTAIN ISC AND ISL ENGINES. *PE

151

ENGINE AND ENGINE COOLING:ENGINE

UPGRADE CUMMINS ISL 350HP TO 400HP. *TT

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

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—
2005Viewing120—
2004410—
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.