KENWORTH ( 09V348000 )

Vehicle Make / Model:		Model Year(s):
KENWORTH / T270		2008-2010
KENWORTH / T300		2008-2010
KENWORTH / T370		2008-2010
KENWORTH / T800		2009-2010
PETERBILT / 335		2008-2010
PETERBILT / 340		2008-2010
PETERBILT / 367		2008-2010
Manufacturer: PACCAR INCORPORATED		Mfr’s Report Date: SEP 02, 2009
NHTSA CAMPAIGN ID Number: 09V348000		N/A NHTSA Action Number: N/A

Component: ENGINE AND ENGINE COOLING:ENGINE:DIESEL

Potential Number of Units Affected: 178

Summary: PACCAR IS RECALLING MODEL YEAR 2008-2010 KENWORTH T300, T270, AND T370, MODEL YEAR 2009-2010 T800 AND PETERBILT MODEL YEAR 2008-2010 335, 340, AND 367 VEHICLES BUILT ON CUMMINS DIESEL ENGINE. THE VEHICLES MAY BE DESIGNED WITH A HARD WIRED, DASH-MOUNTED SWITCH THAT ENABLES THE VEHICLE OPERATOR TO INHIBIT AFTER TREATMENT DIESEL PARTICULATE FILTER REGENERATION IN ENVIRONMENTS WHERE THE OPERATOR BELIEVES IT MAY BE UNSAFE FOR ELEVATED EXHAUST TEMPERATURES. DUE TO AN ISSUE WITH THE LOGIC IN THE ECM SOFTWARE IN THESE ENGINES, THE SWITCH MAY NOT FUNCTION CORRECTLY, LEADING THE OPERATOR TO BELIEVE THAT THE SWITCH IS IN “INHIBIT” MODE WHEN IT IS NOT.

Consequence: THIS CONDITION WILL PERMIT HOT EXHAUST GASES TO EXIT THE VEHICLE TAILPIPE, INCREASING THE RISK OF MELTING OR BURNING OF NEARBY SURFACES, OR A FIRE.

Remedy: PACCAR IS WORKING WITH CUMMINS TO REPAIR THE ENGINES FREE OF CHARGE PLEASE SEE 09E-046. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING SEPTEMBER 2009. OWNERS MAY CONTACT CUMMINS AT 1-800-DIESELS (1-800-343-7357).

Notes: KENWORTH RECALL NO. 09KW9 & PETERBILT RECALL NO. 0909-D. OWNERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION’S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO HTTP://WWW.SAFERCAR.GOV .