Auto Recall Watch
U.S. public vehicle records

Monaco DIPLOMAT recalls by model year

Explore the records behind recurring owner reports.

Key facts

2 owner complaints analyzed

4 distinct recall campaigns

6,750 mi median reported failure mileage

Scope: 2010 to 2018 model years. Data updated: . 2 complaints include usable failure mileage. View data status.

Compare model years

Recalls by model year

All campaigns in the snapshot affecting each model year, including recalls announced years later.

Recall campaigns

Shared campaigns appear once in each affected model year.

2010
1
2011
1
2012
1
2013
2
2014
1
2017
1
2018
1
Recall campaigns data
CategoryCount
20101
20111
20121
20132
20141
20171
20181

2010: 1; 2011: 1; 2012: 1; 2013: 2; 2014: 1; 2017: 1; 2018: 1

Year-by-year records

Monaco DIPLOMAT model-year comparison
Model yearComplaintsRecallsChange in recalls
201001Not available
2011110
2012010
201312+1
201401-1
201701Not available
2018010

Recall history

4 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.

15V872000 · Equipment:Recreational Vehicle/Trailer

Reported: 2015-12-23 (December 23, 2015) · Model years: 2010, 2011, 2012, 2013, 2014

Allied Recreation Group, Inc. (ARG) is recalling certain model year 2010-2011 Holiday Rambler Admiral, 2009-2014 Holiday Rambler Ambassador, 2010 Holiday Rambler Arista, 2010-2014 Holiday Rambler Endeavor, 2009-2011 Holiday Rambler Neptune, 2011-2014 Holiday Rambler Vacationer, 2009-2011 Monaco Cayman, 2010-2014 Monaco Diplomat, 2014 Monaco Dynasty, 2009-2014 Monaco Knight, 2012-2013 Monaco LaPalma, 2009-2013 Monaco Monarch, 2009-2011 Monaco Riptide, 2008 Safari Passage, and 2008 Safari Simba motorhomes. The affected vehicles are equipped with certain Lippert-brand Coachstep Double Electric Steps. These steps use a bolt to attach the fan gear assembly to the steps. This bolt may fracture allowing the fan gear to disengage from the steps. As a result, the steps may not remain in the expected position and may be unstable.

Consequence: Unstable entry and exit steps increase the risk of injury.

Remedy: ARG will notify owners and dealers will install a retainer bracket to reinforce the operating mechanism, free of charge. The recall began on February 12, 2016. Owners may contact ARG customer service number at 1-800-509-3417. ARG's number for this recall is 151216REV.

NHTSA campaign record ↗
13V020000 · Electrical System | Engine And Engine Cooling

Reported: 2013-01-17 (January 17, 2013) · Model years: 2013

Navistar is recalling certain model year 2012-2013 IC Bus brand model 1300FBC, CE, HC, and RE buses; model year 2011-2013 International brand model Durastar, model year 2013 International brand Workstar trucks; model year 2013 Holiday Rambler brand model Ambassador and Endeavor vehicles; and model year 2013 Monaco brand model Diplomat and Knight vehicles. These vehicles were manufactured August 5, 2010 through September 6, 2012 and are equipped with certain 2011-2013 model year I-6 engines with feature codes 12NUK, 12NUL, 12NUM, 12NUN, 12NUP, 12NUR, 12NUS, 12NUT, 12NUU, 12NUV, 12NUX, 12NUY and 12NUZ. The injection pressure regulator (IPR) harness wire may break due to vibrational damage. This could cause an unexpected shut down of the engine.

Consequence: An unexpected engine shut down while driving may increase the risk of a vehicle crash.

Remedy: Navistar will notify owners, and dealers will replace the IPR wire connector free of charge. The safety recall began on March 15, 2013. Owners may contact Navistar at 1-800-448-7825.

NHTSA campaign record ↗
18V202000 · Equipment

Reported: 2018-03-28 (March 28, 2018) · Model years: 2017

REV Recreation Group (REV) is recalling certain 2018 Fleetwood Axon and Pulse, Holiday Rambler Reno and Prodigy, Monaco Marquis and American Coach American Dream motorhomes, 2017-2018 Fleetwood Bounder, Discovery, Discovery LXE, Flair, Jamboree, Southwind, Pace Arrow, Pace Arrow LXE and Storm motorhomes, Holiday Rambler Admiral XE, Endeavor, Endeavor XE, Navigator XE, Navigator, Vacationer, Vacationer XE and Vesta and American Coach American Eagle motorhomes and 2017 Holiday Rambler Scepter, Monaco Diplomat, and American Coach American Revolution motorhomes. The mounting screws for the satellite dish may not have been fastened through the sheet steel reinforcement, possibly allowing the satellite dish to detach from the roof while driving.

Consequence: If the satellite dish detaches from the roof while driving, it can increase the risk of a crash or injury.

Remedy: REV will notify owners, and dealers will resecure the satellite dish to the roof with a metal reinforcement, free of charge. The recall began on May 14, 2018. Owners may contact REV customer service at 1-800-509-3417. REV's number for this recall is 180322REV. Note: This recall supersedes recall 17V-802. Any vehicle repaired under that campaigned is not included in this one as the remedy for both recalls is the same.

NHTSA campaign record ↗
17V477000 · Exterior Lighting:Headlights

Reported: 2017-07-27 (July 27, 2017) · Model years: 2018

REV Recreation Group (REV) is recalling certain 2017-2018 Fleetwood Discovery and Discovery LXE, and Holiday Rambler Endeavor, Endeavor XE, and Admiral XE motorhomes, as well as 2018 Monaco Diplomat, Fleetwood Pace Arrow, Bounder, Flair, and Storm motorhomes, and Holiday Rambler Navigator and Vacationer XE motorhomes. The affected vehicles may have been manufactured with headlights that do not have tempered glass lenses.

Consequence: If the headlamp lens is not tempered, it may crack or break, which may cause decreased illumination and/or premature failure of the headlight bulb, increasing the risk of a crash.

Remedy: REV Recreation Group will notify owners, and authorized REV dealers will inspect, and if necessary, replace non-tempered, defective headlamp lenses with new headlamp lenses, free of charge. The recall began on September 8, 2017. Owners may contact REV customer service at 1-800-509-3417. REVs number for the recall is 170720REV.

NHTSA campaign record ↗
Explore the data

Vehicle analysis explorer

Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.

Data completeness

2 unique complaints in this selection. Analysis snapshot: 2026-09-30.

100.0%Usable mileage2 / 2 records
100.0%Valid incident date2 / 2 records
100.0%Valid filing date2 / 2 records
100.0%Ordered incident and filing dates2 / 2 records

Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.

Problems by model year

Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.

Component complaint heatmap
Component2010201120122013201420172018
Engine
0Unavailable

No examples available for this selection.

00.0%

No examples available for this selection.

0Unavailable

No examples available for this selection.

1100.0%
ODI 10638598 · 3,500 mi

I WAS DRIVING UP A MOUNTAIN WHEN A LOUD BANG OCCURRED. ENGINE LOST POWER AND COULD NOT CLIMB HILL/MOUNTAIN. LARGE AMOUNTS OF BLACK AND WHITE SMOKE CAME FROM THE REAR OF THE COACH. I WAS STUCK ON THE SIDE OF THE MOUNTAIN FOR 14 HOURS BEFORE SOMEONE COULD GET TO US. THIS IS THE SECOND TIME THIS ISSUE HAS OCCURRED AND IS ASSOCIATED WITH THE DPF MIL LAMP COMING ON. *TR

Look up ODI 10638598 at NHTSA ↗

0Unavailable

No examples available for this selection.

0Unavailable

No examples available for this selection.

0Unavailable

No examples available for this selection.

Structure:Body
0Unavailable

No examples available for this selection.

1100.0%
ODI 10819753 · 10,000 mi

WHEN STOPPED AND EXITING COACH, ENTRY STEPS COLLAPSED TOSSING ME AROUND. THE STEPS WOULD NOT RETRACT AFTERWARDS AND SO I HAD TO PUSH THE STEPS UP AND TIE THEM UP SO WE COULD COMPLETE THE TRIP USING A SHORT LADDER TO GET IN AND OUT OF THE COACH. FURTHER RESEARCH SHOWS THE BOLT HOLDING THE FAN GEAR SHEARED. IT SEEMS IT SHOULD BE PART OF THE NHTSA RECALL 15V872 AT HTTP://WWW-ODI.NHTSA.DOT.GOV/OWNERS/SEARCHRESULTS?REFURL=EMAIL&SEARCHTYPE=ID&TARGETCATEGORY=R&SEARCHCRITERIA.NHTSA_IDS=15V872 BUT, SO FAR, 1-12-16 : ARG AND MONACO DO NOT…

Look up ODI 10819753 at NHTSA ↗

0Unavailable

No examples available for this selection.

00.0%

No examples available for this selection.

0Unavailable

No examples available for this selection.

0Unavailable

No examples available for this selection.

0Unavailable

No examples available for this selection.

Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.

Failure mileage by component

Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.

Component failure mileage distribution
ComponentMileage range (25th–75th percentile)MedianUsable recordsExamples
EngineToo few reports for a range3,500 mi1 (sparse)
ODI 10638598 · 3,500 mi

I WAS DRIVING UP A MOUNTAIN WHEN A LOUD BANG OCCURRED. ENGINE LOST POWER AND COULD NOT CLIMB HILL/MOUNTAIN. LARGE AMOUNTS OF BLACK AND WHITE SMOKE CAME FROM THE REAR OF THE COACH. I WAS STUCK ON THE SIDE OF THE MOUNTAIN FOR 14 HOURS BEFORE SOMEONE COULD GET TO US. THIS IS THE SECOND TIME THIS ISSUE HAS OCCURRED AND IS ASSOCIATED WITH THE DPF MIL LAMP COMING ON. *TR

Look up ODI 10638598 at NHTSA ↗

Structure:BodyToo few reports for a range10,000 mi1 (sparse)
ODI 10819753 · 10,000 mi

WHEN STOPPED AND EXITING COACH, ENTRY STEPS COLLAPSED TOSSING ME AROUND. THE STEPS WOULD NOT RETRACT AFTERWARDS AND SO I HAD TO PUSH THE STEPS UP AND TIE THEM UP SO WE COULD COMPLETE THE TRIP USING A SHORT LADDER TO GET IN AND OUT OF THE COACH. FURTHER RESEARCH SHOWS THE BOLT HOLDING THE FAN GEAR SHEARED. IT SEEMS IT SHOULD BE PART OF THE NHTSA RECALL 15V872 AT HTTP://WWW-ODI.NHTSA.DOT.GOV/OWNERS/SEARCHRESULTS?REFURL=EMAIL&SEARCHTYPE=ID&TARGETCATEGORY=R&SEARCHCRITERIA.NHTSA_IDS=15V872 BUT, SO FAR, 1-12-16 : ARG AND MONACO DO NOT…

Look up ODI 10819753 at NHTSA ↗

Complaint and recall timeline

Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.

1 reports2024-102026-09

Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.

Monthly counts, recall campaigns and complaint examples
Monthly complaint and recall timeline
MonthComplaintsCampaigns announcedExamples
2024-100None

No examples available for this selection.

2024-110None

No examples available for this selection.

2024-120None

No examples available for this selection.

2025-010None

No examples available for this selection.

2025-020None

No examples available for this selection.

2025-030None

No examples available for this selection.

2025-040None

No examples available for this selection.

2025-050None

No examples available for this selection.

2025-060None

No examples available for this selection.

2025-070None

No examples available for this selection.

2025-080None

No examples available for this selection.

2025-090None

No examples available for this selection.

2025-100None

No examples available for this selection.

2025-110None

No examples available for this selection.

2025-120None

No examples available for this selection.

2026-010None

No examples available for this selection.

2026-020None

No examples available for this selection.

2026-030None

No examples available for this selection.

2026-040None

No examples available for this selection.

2026-050None

No examples available for this selection.

2026-060None

No examples available for this selection.

2026-070None

No examples available for this selection.

2026-080None

No examples available for this selection.

2026-09 (partial)0None

No examples available for this selection.

Emerging complaint spikes

Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.

This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.

No complete months meet the spike thresholds for this selection.

Equal-age model-year comparison

Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.

Age 0Age 1Age 21 reports

2017: 0 complaints · 2018: 0 complaints

Equal observation windows
Model yearThrough age 0Through age 1Through age 2
2017000
2018000
Date coverage across each selected cohort
Date basis for all complaints in selected model years
YearIncident dates usedFiling date fallbacksExcluded dates
2017000
2018000

Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.

Components reported together

Each cell counts unique complaints naming both components. Open a nonzero cell for examples.

Component co-occurrence matrix
ComponentEngineStructure:Body
Engine—0
Structure:Body0—

Co-reporting does not establish that one component caused another concern.

Recurring narrative patterns

Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.

1 patterns with matching reports.

Stalling or loss of power

1 mentions · 50.0% of complaints

Median mileage: 3,500 mi (1 usable records).

ODI 10638598 · 3,500 mi

I WAS DRIVING UP A MOUNTAIN WHEN A LOUD BANG OCCURRED. ENGINE LOST POWER AND COULD NOT CLIMB HILL/MOUNTAIN. LARGE AMOUNTS OF BLACK AND WHITE SMOKE CAME FROM THE REAR OF THE COACH. I WAS STUCK ON THE SIDE OF THE MOUNTAIN FOR 14 HOURS BEFORE SOMEONE COULD GET TO US. THIS IS THE SECOND TIME THIS ISSUE HAS OCCURRED AND IS ASSOCIATED WITH THE DPF MIL LAMP COMING ON. *TR

Look up ODI 10638598 at NHTSA ↗

Matching rule\b(stall\w*|loss of power|lost power|engine shut\w* off)\b