The 2004 Monaco Coach Knight has 3 NHTSA recall campaigns affecting an estimated 3,371 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 6 complaints with NHTSA, most often about the suspension. Last updated July 5, 2026.
Recall campaigns
ENGINE AND ENGINE COOLING04V4410002004-09-131,189 affected
Defect
ON CERTAIN MOTORHOMES EQUIPPED WITH CUMMINS ENGINES, OIL CAN LEAK INTO THE ENGINE COMPARTMENT FROM A CRACK IN THE CUP PLUG.
Consequence
OIL LEAKAGE ON A HOT ENGINE CAN RESULT IN AN ENGINE COMPARTMENT FIRE, POSSIBLY RESULTING IN INJURIES.
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.
SUSPENSION04V0380002004-01-282,156 affected
Defect
ON CERTAIN MOTORHOMES, THE I-BEAM LEAF IMITATOR IN THE FRONT AXLE SUSPENSION COULD CRACK AND BREAK DUE TO AN INADEQUATE WELDING PROCESS.
Consequence
THE I-BEAMS ON THE FRONT AXLE AND THE PANARD BRACKET ON THE REAR AXLE COULD CRACK AND BREAK CAUSING THE DRIVER TO LOSE CONTROL OF THE VEHICLE INCREASING THE RISK OF A CRASH.
Remedy
DEALERS WILL REPLACE THE ORIGINAL I-BEAM. ALSO, DEALERS WILL WELD THE STIFFENERS FROM THE PANARD BAR BRACKET TO THE CENTER DIFFERENTIAL OF THE REAR AXLE HOUSING. OWNER NOTIFICATION BEGAN MARCH 1, 2004. OWNERS SHOULD CONTACT MONACO AT 1-877-466-6226.
SERVICE BRAKES, AIR03V3600002003-10-0126 affected
Defect
ON CERTAIN MOTORHOMES CERTIFICATION TAGS WERE OMITTED ON THE CLOTH COVERED FRONT AND REAR BRAKE LINE ASSEMBLIES.
Consequence
THIS DOES NOT COMPLY WITH THE STANDARD.
Remedy
DEALERS WILL INSTALL NEW FRONT AND REAR CLOTH COVERED BRAKE LINES THAT HAVE THE REQUIRED CERTIFICATION TAGS. OWNER NOTIFICATION BEGAN OCTOBER 20, 2003. 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…
Complaints by component
SUSPENSION
2
SUSPENSION:REAR
2
ELECTRICAL SYSTEM
1
POWER TRAIN
1
Total complaints6
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“Tl* the contact owns a 2004 monaco coach knight. The contact stated that the weld was 3/4 of the way cracked and rusty for a long time. While driving 65 mph, the motorhome started to sway every time the brake pedal was depressed. The motorhome was taken to a chassis repair shop where it was…”
“As I pulled out of the campground, the trailing arm on the passenger side broke allowing the rear axle to slip forcing the motorhome to veer sharply to the right. If I had been traveling at highway speed results would have been total lose of control. After searching monaco blogs, I found this is a…”
“As I pulled out of the campground, the trailing arm on the passenger side broke allowing the rear axle to slip forcing the motorhome to veer sharply to the right. If I had been traveling at highway speed results would have been total lose of control. After searching monaco blogs, I found this is a…”
“Tl* the contact owns a 2oo4 monaco knight rv. While the contact was driving approximately 40 mph, the vehicle excessively vibrated. The contact reduced speed and continued with driving with caution. While the vehicle was parked at the residence , the contact detected that the rear axle trailing…”
“I am original owner, purchased rv new sept 2004 from fresno dealer. Prior to the road incident, I never rec'd or had any notice of any recall or probs, nor had any symptoms. After about 3 hrs of driving from the central valley (visalia) down I-5 through la in ca on a reasonably flat highway, I…”
“On a 2004 monaco knignt motor home the oil sending sensor will ground out when it is exposed to moisture. (ie rain or road spray) this causes a false warning buzzer to activate. Responsible action is to pull to the side of the road and attempt to determine the reason for the warning buzzer.…”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2004 Monaco Coach Knight as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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