2003 Winnebago Adventurer: common problems

Owners of the 2003 Winnebago Adventurer filed 16 complaints with NHTSA, most often about service brakes and equipment. Details by component below, with sources.

Key figures

Owner complaints: 16

What fails most often

1 Service brakes 63% of all complaints
2 Equipment 19% of all complaints
3 Steering 13% of all complaints
4 Electrical system 6% of all complaints
5 Engine and cooling 6% of all complaints
6 Suspension 6% of all complaints
7 Visibility 6% of all complaints

Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Service brakes: 10 complaints (63% of all).
Equipment: 3 complaints (19% of all).
Steering: 2 complaints (13% of all).
Electrical system: 1 complaints (6% of all).
Engine and cooling: 1 complaints (6% of all).

Symptoms owners describe

How many of the 16 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

rust, corrosion2 · 13%
warning lights, check engine2 · 13%
brake failure1 · 6%
A/C or heater1 · 6%
fuel system, fuel smell1 · 6%
headlights and tail lights1 · 6%
smoke, burning smell, fire1 · 6%
vibration1 · 6%
windows, sunroof1 · 6%

Components owners complain about

Component	Owner complaints	involving a crash	Technical service bulletins (TSB)
Service brakes	10	0	0
Equipment	3	0	0
Steering	2	0	0
Electrical system	1	0	0
Engine and cooling	1	0	0
Suspension	1	0	0
Visibility	1	0	0
Other	2	0	0

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

While driving approximately 55 mph the contact felt a vibration in the vehicle. The contact pulled over to the side of the road and inspected the vehicle. The contact did not find any problems.
Service brakes · 2011-02-04 · NHTSA complaint #10380230
I had the workhorse authorized service center inspect the brakes and they found no external cause for the drag (corroded slides, etc.) rotors were replaced after the first occurrence (mar 2009) and brake fluid was changed to make sure moisture retention was not a problem.
Service brakes · 2010-02-05 · NHTSA complaint #10306740
My 2003 winnebago adventurer 38g with workhorse chassis had a rear brake failure that was identical to brake failures covered by a workhorse recall through the 2002 models. After considerable correspondence with workhorse & finally with winnebago, workhorse reluctantly agreed to pay 1/2 of the cost.
Service brakes · 2009-01-25 · NHTSA complaint #10256254
Driver side windows on my 2003 winnebago adventurer have fogged up, limiting visibility and begun to leak. These windows were thermo-paned glass.
Visibility · 2006-08-12 · NHTSA complaint #10165305
For the third straight year I have had to take it my 2003 winnebago adventurer to an authorized workhorse service center because the dashboard air conditioning wasn't cooling. Each time the refrigerant was gone, they said no leaks could be found and they just recharged the system.
Equipment · 2005-09-16 · NHTSA complaint #10136768
The consumer feels that the cooling system installed by the workhorse factory is inadequate. The consumer stated that workgorse should do the upgrade free of charge. The consumer also stated that the new workhorse leather steering wheel for better grip should be installed free of charge.
Equipment · 2004-12-08 · NHTSA complaint #10101463
The following items have been repaired: hole in dust cap on left front wheel, water in left front head light, sound on back up monitor, florescent light covers falling off, broken cupboard latch, gas leak on generator, rusty lp gas lines, and clamps broken on lp gas lines.
Equipment · 2003-12-16 · NHTSA complaint #10050579

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

20032
20043
20051
20061
20071
20084
20092
20101
20111

Comparison

By complaint count this model year ranks 9,040 of 36,656 model years in the NHTSA data (top 25% most complained about).

On average one model year of the Adventurer has 7 complaints (29 years in the data). This year has 16, above average.

What to check before buying

Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
Steering. Steering play, power assist, rack and tie rods after a wheel impact.
Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.

Questions and answers

What are the most common problems with the 2003 Winnebago Adventurer?

Owner complaints to NHTSA most often mention: service brakes, equipment, steering. Total complaints: 16. The most frequent symptoms in complaint texts: rust, corrosion (13%), warning lights, check engine (13%), brake failure (6%).

How many service bulletins (TSB) were issued for the 2003 Winnebago Adventurer?

NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 2003 Winnebago Adventurer from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 2003 models

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.