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2004 Kenworth T300 Recalls & Complaints

4

open safety recalls on record

Critical

1 owner complaints filed · Severity Index 3.00 · updated 2026-08-07

The recalls

Critical04V580000

Electrical System:Wiring

THIS COULD LEAD TO INTERMITTENT POWER LOSS AFFECTING THE ELECTRICAL SYSTEM AND POSSIBLY RESULT IN A FIRE.

Remedy & full details

DEALERS WILL REPLACE THE HARNESS. THE RECALL BEGAN JANUARY 13, 2005. OWNERS SHOULD CONTACT KENWORTH AT 1-425-828-5440.

ON CERTAIN TRUCKS, THE POWER FEED HARNESS P92-1993 TERMINALS WERE NOT PROPERLY CRIMPED.

Critical04V406000

Engine And Engine Cooling

THIS OIL LEAKAGE HAS THE POTENTIAL TO IGNITE AND CAUSE A FIRE IN THE ENGINE COMPARTMENT OF THE VEHICLE.

Remedy & full details

CUMMINS WILL NOTIFY OWNERS AND ARRANGE FOR INSTALLATION OF A STEEL CUP PLUG BOSS CAP. OWNERS SHOULD CONTACT CUMMINS AT 1-800-343-7357.

ON CERTAIN TRUCKS BUILT WITH CUMMINS ISC AND ISL ENGINES, PLUGS WERE ASSEMBLED INCORRECTLY CREATING STRESS AND CRACKS WHICH COULD CAUSE AN OIL LEAK.

Serious07V107000

Power Train:Automatic Transmission

IF ANY OF THESE CONDITIONS EXISTS, THE TRANSMISSION WILL NOT AUTOMATICALLY SHIFT INTO NEUTRAL WHEN LEFT IN DRIVE WITH THE PARKING BRAKE SET ENGAGED.

Remedy & full details

DEALERS WILL INSPECT THE AFFECTED VEHICLES TO ENSURE THE AUTO NEUTRAL FEATURE FUNCTIONS PROPERLY AND, IF NEEDED, WILL MAKE THE NECESSARY REPAIRS FREE OF CHARGE. THE RECALL BEGAN ON MAY 9, 2007. OWNERS MAY CONTACT KENWORTH AT 425-828-5440.

ON CERTAIN TRUCKS, THE WIRING, PARTS, OR TRANSMISSION PROGRAMMING REQUIRED FOR THE AUTO NEUTRAL FEATURE TO FUNCTION AS DESIGNED WERE EITHER NOT INSTALLED, CONNECTED, OR PROGRAMMED PROPERLY.

Serious04V169000

Engine And Engine Cooling:Cooling System:Fan

IF THE BOLTS FAIL, THE COMPLETE HUB AND FAN ASSEMBLY COULD SEPARATE FROM THE ENGINE RESULTING IN EQUIPMENT DAMAGE AND/OR PERSONAL INJURY.

Remedy & full details

DEALERS WILL INSTALL A NEW JOURNAL BRACKET. THE RECALL BEGAN MAY 11, 2004. OWNERS SHOULD CONTACT KENWORTH AT 1-425-828-5440.

ON CERTAIN TRUCKS EQUIPPED WITH CATERPILLAR C7 OR 3126E 2002 ENGINES AND HORTON FAN HUBS, THE FAN HUB MOUNTING BOLTS CAN FAIL, RESULTING IN THE HUB AND FAN ASSEMBLY SEPARATING FROM THE ENGINE. THIS LOSS OF CLAMP LOAD CAUSES UNWANTED VIBRATION IN THE ASSEMBLY THAT LEADS TO BOLT FAILURE.

Complaint volume

1 this model-year 6 median, same year

Volume alone is not a fault rate — popular vehicles attract more reports. Read it next to the severity mix below.

What owners reported happened

0Crashes
1Fires
0Injuries
0Deaths

Across 1 complaints. Severity Index 3.00.

Severity Index weights each complaint's reported outcome (death ×10, injury ×4, fire ×3, crash ×2) and divides by total complaints. It measures how severe reports are, not how often faults occur.

What owners report most

  1. Electrical System:Wiring — 1 reports

What to do

  1. Find your 17-character VIN on the driver's door jamb or the base of the windscreen.
  2. Check it against NHTSA's official lookup at nhtsa.gov/recalls — the authoritative record for your exact car.
  3. Book the repair with any franchised dealer. Safety recall work is free, with no time limit and regardless of who owns the car now.

Other model years

2001 (5) · 2004 · 2005 (2) · 2007 (5)

Numbers in brackets are open recall campaigns for that year.

Questions

Does an open recall mean the car is unsafe to drive?

Not usually. NHTSA issues a "do not drive" or "park outside" advisory when a defect is dangerous enough to keep you out of the car — those are flagged Critical above. Everything else should be repaired promptly but is not an immediate stop-driving order.

Do I pay for recall repairs?

No. Federal law requires the manufacturer to fix a safety recall free of charge, including parts and labour, whether or not you are the original owner.

Why are there complaints but no recalls?

Complaints are unverified reports filed by owners. They can prompt an investigation, but many never become recalls — either the fault isn't safety-related or it isn't widespread.