2004 Monaco Coach Diplomat Problems, Complaints & Recalls
- Compared with other Diplomat years
- Not enough data 4th of 13 for complaints
- Safety recalls
- 1 recall: check your VIN
- NHTSA crash rating
- Not rated
Owners have filed 4 complaints with NHTSA about the 2004 Monaco Coach Diplomat. That ranks 4th out of 13 Diplomat model years for complaints. The most reported problem area is electrical system (2 complaints, 50%), typically at around 806 miles. There is 1 safety recall covering this model year.
- 4owner complaints
- 1safety recalls
- 0NHTSA investigations
- 0complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
Most common 2004 Monaco Coach Diplomat problems
Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.
| Problem area | Complaints | Share | Median miles | Owners mention most | Typical repair cost |
|---|---|---|---|---|---|
| Electrical System | 2 | 50% | 806 | — | — |
| Service Brakes, Hydraulic | 2 | 50% | 806 | — | — |
| Structure | 2 | 50% | 806 | — | — |
| Visibility | 2 | 50% | 3,727 | — | — |
| Equipment | 1 | 25% | — | — | — |
| Seats | 1 | 25% | 806 | — | — |
One complaint can list several problem areas, so shares can add up to more than 100%.
2004 Monaco Coach Diplomat recalls (1)
Tap a recall to see the problem, the risk and the fix.
Engine and engine cooling:engine:diesel
Problem: On certain motorhomes equipped with cummins engines, oil can leak into the engine compartment from a crack in the cup plug.
Risk: Oil leakage on a hot engine can result in an engine compartment fire, possibly resulting in injuries.
Fix: 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.
To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.
Recent owner reports
Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.
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…
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.
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.
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…
Other Monaco Coach Diplomat years
← 2002 Diplomat · 2005 Diplomat →
| Year | Complaints | Recalls |
|---|---|---|
| 2011 Diplomat | 1 | 4 |
| 2010 Diplomat | 1 | 5 |
| 2009 Diplomat | 1 | 1 |
| 2008 Diplomat | 2 | 2 |
| 2007 Diplomat | 1 | 3 |
| 2006 Diplomat | 4 | 3 |
| 2005 Diplomat | 1 | 2 |
| 2004 | 4 | 1 |
| 2002 Diplomat | 2 | 1 |
| 2001 Diplomat | 6 | 4 |
| 2000 Diplomat | 14 | 2 |
| 1999 Diplomat | 10 | 3 |
| 1998 Diplomat | 1 | 3 |
See all Monaco Coach Diplomat problems by year, every Monaco Coach model, or the VIN decoder.
Similar Monaco Coach models
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Frequently asked questions
What are the most common problems with the 2004 Monaco Coach Diplomat?
Owners most often report electrical system, service brakes, hydraulic, structure problems. The top one, electrical system, accounts for 2 complaints.
Was there a recall on the 2004 Monaco Coach Diplomat?
Yes, 1 safety recall. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.
Was the 2004 Monaco Coach Diplomat a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other Diplomat model years, the 2004 has too little data to compare. Always get a pre-purchase inspection and check the VIN for open recalls.