# Service bulletin 15\-028A A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned. - Type: Service bulletin - NHTSA id: 10126806 - Published by NHTSA: 2018\-01\-05 - Manufacturer's number: 15\-028A - Manufacturer's date: 2015\-09\-14 - NHTSA component: ENGINE AND ENGINE COOLING ## NHTSA's summary 15\-028 New Detroit Coolant Line SRTs ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10126806-9999.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10126806-0001.pdf) The document is the manufacturer's. This site does not hold it. ## Components Engine ## Vehicles listed - 2014 to 2015 FCCC MBC - 2011 to 2012 FCCC MC - 2015 FCCC MC - 2005 to 2012 FCCC MCL - 2011 to 2012 FCCC MT45 - 2014 to 2015 FCCC MT45 - 2014 to 2015 FCCC MT45G - 2011 to 2012 FCCC MT55 - 2014 to 2015 FCCC MT55 - 2014 to 2015 FCCC MT55G - 2011 to 2012 FCCC S2 - 2016 to 2017 FCCC S2 - 2011 to 2013 FCCC S2 106 CH - 2011 to 2013 FCCC S2C 106CAB - 2015 FCCC S2C 106CAB - 2018 FCCC S2C 106CAB - 2013 to 2016 FCCC S2G - 2018 FCCC S2G - 2015 FCCC SPORT M2106 - 2007 to 2016 FCCC XBP - 2011 to 2018 FCCC XBR - 2011 to 2016 FCCC XBS - 2011 to 2018 FCCC XCL - 2007 to 2018 FCCC XCM - 2007 to 2017 FCCC XCP - 2010 to 2018 FCCC XCR - 2011 to 2016 FCCC XCS - 2008 to 2009 FCCC redundant CUSTOM CHASSIS - 2010 FCCC redundant CUSTOM CHASSIS S2 - 2010 to 2013 FCCC redundant CUSTOM CHASSIS XB - 2010 to 2013 FCCC redundant CUSTOM CHASSIS XC - 2018 FCCC redundant CUSTOM CHASSIS XCM - 2018 FCCC redundant CUSTOM CHASSIS XCP - 2014 to 2018 FCCC redundant S2G - 2009 to 2018 FREIGHTLINER 1085D - 2000 FREIGHTLINER 108SD - 2001 to 2008 FREIGHTLINER 108SD - 2010 to 2018 FREIGHTLINER 108SD - 2000 to 2003 FREIGHTLINER 1145D - 2007 to 2018 FREIGHTLINER 1145D - 2004 to 2018 FREIGHTLINER 114SD - 2007 to 2018 FREIGHTLINER 122SD - 2004 to 2015 FREIGHTLINER ARGOSY - 2015 FREIGHTLINER ARGOSY GLIDER - 2008 FREIGHTLINER ARGOSY RHD - 2012 FREIGHTLINER B2 BUS CHASSIS - 2009 to 2017 FREIGHTLINER BUSINESS CLASS M2 - 2005 to 2009 FREIGHTLINER BUSINESS CLASS M2 106V - 2011 FREIGHTLINER BUSINESS CLASS M2 106V - 2002 to 2018 FREIGHTLINER CASCADIA - 2005 to 2013 FREIGHTLINER CENTURY - 2002 to 2017 FREIGHTLINER CENTURY CLASS - 2005 to 2011 FREIGHTLINER CLASSIC XL - 2002 to 2003 FREIGHTLINER COLUMBIA - 2005 to 2017 FREIGHTLINER COLUMBIA - 2011 to 2016 FREIGHTLINER COLUMBIA GLIDER - 2001 to 2007 FREIGHTLINER CONDOR - 2002 to 2003 FREIGHTLINER CORONADO - 2005 to 2017 FREIGHTLINER CORONADO - 2016 FREIGHTLINER CORONADO GLIDER - 2004 to 2011 FREIGHTLINER FLD - 2008 FREIGHTLINER FLD CLASSIC - 2005 to 2016 FREIGHTLINER M2 - 2018 FREIGHTLINER M2 BUSINESS CLASS - 2007 to 2014 FREIGHTLINER MT45 - 2011 to 2014 FREIGHTLINER MT45G - 2008 to 2014 FREIGHTLINER MT55 - 2016 FREIGHTLINER MT55 - 2011 to 2014 FREIGHTLINER MT55G - 2006 to 2017 FREIGHTLINER SPRINTER 2500 - 2006 to 2017 FREIGHTLINER SPRINTER 3500 - 2011 to 2012 FREIGHTLINER WESTERN STAR - 2008 to 2009 FREIGHTLINER X\-LINE - 2016 FREIGHTLINER X\-LINE - 2010 FREIGHTLINER XCS - 2017 FREIGHTLINER CUSTOM CHASS XCM - 2017 to 2018 FREIGHTLINER CUSTOM CHASS XCP - 2017 FREIGHTLINER CUSTOM CHASS XCR - 2007 to 2009 STERLING 360 - 2005 to 2012 STERLING 7500 - 2005 to 2012 STERLING 8500 - 2006 to 2013 STERLING 9500 - 2004 to 2012 STERLING A\-LINE - 2005 to 2012 STERLING ACTERRA - 2008 to 2009 STERLING BULLET - 2001 to 2007 STERLING CONDOR - 2004 to 2010 STERLING L\-LINE - 2008 to 2015 STERLING LT8500 - 2010 THOMAS BUILT BUSES C2 - 2000 to 2001 THOMAS BUILT BUSES CL\-960 - 2009 THOMAS BUILT BUSES ER - 2006 to 2015 THOMAS BUILT BUSES FS\-65 - 2005 to 2012 THOMAS BUILT BUSES HDX - 2015 THOMAS BUILT BUSES HDX - 2000 to 2018 THOMAS BUILT BUSES MINOTOUR - 2003 THOMAS BUILT BUSES MVP\-EF - 2006 to 2012 THOMAS BUILT BUSES MVP\-EF - 2009 THOMAS BUILT BUSES MVP\-ER - 2001 to 2019 THOMAS BUILT BUSES SAF\-T\-LINER C2 - 2000 THOMAS BUILT BUSES SAF\-T\-LINER EF - 2006 to 2015 THOMAS BUILT BUSES SAF\-T\-LINER EF - 2001 to 2018 THOMAS BUILT BUSES SAF\-T\-LINER EFX - 2000 to 2013 THOMAS BUILT BUSES SAF\-T\-LINER ER - 2000 to 2015 THOMAS BUILT BUSES SAF\-T\-LINER FS65 - 2001 to 2018 THOMAS BUILT BUSES SAF\-T\-LINER HDX - 2000 to 2013 THOMAS BUILT BUSES SAF\-T\-LINER MVP\-EF - 2000 to 2017 THOMAS BUILT BUSES SAF\-T\-LINER MVP\-ER - 2000 to 2013 THOMAS BUILT BUSES TL\-960 - 1998 to 1999 THOMAS BUILT BUSES VISTA - 2001 to 2013 THOMAS BUILT BUSES VISTA - 2002 to 2018 WESTERN STAR 4700 - 2010 to 2017 WESTERN STAR 4800 - WESTERN STAR 4900 - 2002 to 2018 WESTERN STAR 4900 - 2002 to 2011 WESTERN STAR 4900 SA - 2006 to 2007 WESTERN STAR 4900EX - 2002 to 2018 WESTERN STAR 5700 - 2004 to 2017 WESTERN STAR 5900 - WESTERN STAR 6900 - 2002 to 2018 WESTERN STAR 6900 - 2009 to 2013 WESTERN STAR CONSTELLATION ## Recalls for the same vehicles and component - [18V581000](/recalls/nhtsa/18V581000.md), 2018-08-30: ENGINE AND ENGINE COOLING:ENGINE:DIESEL - [16V416000](/recalls/nhtsa/16V416000.md), 2016-06-09: ENGINE AND ENGINE COOLING:ENGINE:DIESEL - [2016285](/recalls/tc/2016285.md), 2016-06-06: Engine - [15V816000](/recalls/nhtsa/15V816000.md), 2015-12-07: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE - [2015484](/recalls/tc/2015484.md), 2015-10-16: Engine - [15V620000](/recalls/nhtsa/15V620000.md), 2015-10-02: ELECTRICAL SYSTEM:IGNITION:MODULE; ENGINE AND ENGINE COOLING:ENGINE - [14V680000](/recalls/nhtsa/14V680000.md), 2014-10-29: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE - [14V080000](/recalls/nhtsa/14V080000.md), 2014-02-21: ENGINE AND ENGINE COOLING:ENGINE - [12V074000](/recalls/nhtsa/12V074000.md), 2012-02-28: ENGINE AND ENGINE COOLING:ENGINE:DIESEL - [11V605000](/recalls/nhtsa/11V605000.md), 2011-12-27: ENGINE AND ENGINE COOLING:ENGINE:DIESEL ## Other bulletins for the same vehicles and component - [Exhaust System](/bulletins/11036890.md), 2026-09-04, Warranty extension: ENGINE. Mercedes\-Benz AG \(“MBAG”\), the manufacturer of Freightliner Sprinter vehicles, has determined that on certain MY17\-18 Freightliner Sprinter vehicles, the diesel particulate filter may crack due to an insufficient weld. MBAG also determined that specific environmental influences in the form of corrosion could have a negative effect on the long\-term durability of the diesel particulate filter. This can lead to stresses within the exhaust system which could cause the diesel particulate filter to crack. In addition, in individual cases, it is possible that during repairs to the exhaust system that were unrelated to a defect of the diesel particulate filter, the exhaust system was not replaced in accordance with the MBAG specifications. Specifically, the issue might have arisen where it was necessary for the workshop to replace the exhaust system \(including the diesel particulate filter\) but that the replacement system was not fitted according to MBAG specifications. This could lead to stresses within the exhaust system which may also cause the diesel particulate filter to crack. In both cases, a fault code is stored in the engine control unit software and the engine diagnostics warning lamp \(MIL\) is activated. The driver would become aware of the issue due to noise from the exhaust system. - [LI4910\-N\-060969](/bulletins/11031943.md), 2026-05-02, Service bulletin: ENGINE. Complaint Rattling noise from underneath the vehicle. Cause One or more of the following conditions may be present: 1. The exhaust bracket from the DPF to the transmission is cracked or broken. • See Pic. 1 for an example of a broken bracket. 2. Transmission bell housing cracked or broken at the exhaust mounting area. • See Pic. 2 for an example of bell housing damage. 3. Exhaust bracket from DPF to engine \(cylinder crankcase\) cracked or broken. • See EPC OM651 \#217 for bracket location. 4. Diesel Particulate Filter \(DPF\) pipe cracked at a weld joint. • Cracking may be present at bracket welds or along the DPF housing seams. • This can cause rattling noises and secondary exhaust bracket stress. • Perform a visual inspection of the DPF pipe and weld joints. Remedy Inspect all related components and repair or replace as required. Inspection and Repair 1. Inspect the exhaust bracket from the DPF to the transmission. • Check the bracket for cracks or complete separation. • See Pic. 1 for a failed example. • See EPC OM651 \#550 and Pic. 3 for bracket location. • If damaged, replace the bracket. • See Pic. 4, Pic. 5, and Pic. 6 for the updated bracket design and identification. 2. Inspect the transmission bell housing. • Inspect the bell housing at the exhaust mounting point for cracks or structural damage. • See Pic. 2 for an example of bell housing damage. • Replace the transmission if damage is confirmed. 3. Inspect the exhaust bracket from the DPF to the engine \(cylinder crankcase\). • Inspect the bracket for cracks or broken mounting points. • See EPC OM651 \#217 for bracket location. • Replace the bracket if damaged. 4. Inspect the DPF pipe. • Inspect the DPF for cracks at weld joints, especially near mounting points. • If cracking is found, replace per current aftertreatment guidelines. Correct positioning and tightening of the exhaust system are critical to prevent repeat failures. Positioning the Exhaust System 1. Position and align the exhaust system before tightening. • Support and fit the exhaust system in its installed position. • Push the exhaust system forward. • Install the DPF‑to‑transmission bracket and lightly tighten the mounting bolt. • Install the engine mount and V‑mount bolts by hand, approximately two turns. • See “Positioning of the exhaust system” image. Tightening Sequence 1. Tighten the exhaust system in the correct sequence. • Tighten engine mounting bolts to 25 Nm. • Tighten V‑mount bolts to 25 Nm. • Tighten exhaust bracket bolts to 15 Nm. • See “Tightening sequence of the exhaust system” image. 2. Verify mounting bolt locations. • Confirm correct mounting screw positions at the transmission bracket. • See Pic. 7 and Pic. 8 for mounting screw locations. - [LI4920N075995](/bulletins/11029272.md), 2026-03-03, Service bulletin: ENGINE. Vehicles with SCR Generation 4: SCR/AdBlue® warning message cannot be reset with fault code P13DF00 or P300685 Complaint Vehicles with SCR Generation 4: SCR/AdBlue® warning message cannot be reset. Information: All fault codes in the AdBlue® \(SCR\) control unit have been processed and corrected; however, fault codes P13DF00 and P300685 remain active and stored in the AdBlue® \(SCR\) control unit. Cause The procedure for resetting the SCR/AdBlue® warning message with XENTRY Diagnosis has not been carried out. Information: Before resetting the SCR/AdBlue® warning message for SCR Generation 4, the AdBlue® system must be in proper working condition and tested. - [LI14.20\-N\-073867](/bulletins/11028113.md), 2026-02-03, Service bulletin: ENGINE. EGR Valve Diagnosis \& Cleaning \(and EGR Cooler Cleaning\) – OM642, Sprinter 906/907 Complaint A: The engine is jolting/bucking between 1700 and 1900 rpm. Complaint B: One or more mechanical related fault codes for EGR Valve stored in CDI control unit, with possible Check Engine Light. Review list of mechanical fault codes in table below. NOTE: If one or more electrical related fault codes for EGR Valve are also present in CDI, utilize Complaint C. Review list of electrical fault codes PDF document in attachments. Complaint C: One or more electrical related fault codes for EGR Valve stored in CDI control unit, with possible Check Engine Light. Review list of electrical fault codes PDF document attached. Cause of Complaint A: Increased friction between the EGR Valve blade and seat due to soot deposits causing a delay of the EGR Valve being able to reach the target value of the EGR Valve position controller. NOTE: This causes the EGR Valve blade and potentially the boost pressure controller to oscillate. Cause of Complaint B: Soot deposits between the EGR Valve blade and seat leading to the EGR Valve no longer being able to meet the desired target of the EGR Valve position controller. Cause of Complaint C: Internal EGR Valve or other electrical faults related to the EGR Valve function. - [FleetCom\_SS 3163\-FTL](/bulletins/11026453.md), 2025-12-06, Other: ENGINE. Fleet Communications for Power Steering Reservoir Fill Cap Venting - [LI14.20\-N\-073867](/bulletins/11018920.md), 2025-06-03, Service bulletin: ENGINE. Complaint Complaint A: The engine is jolting/bucking between 1700 and 1900 rpm. Complaint B: One or more mechanical related fault codes for EGR Valve stored in CDI control unit, with possible Check Engine Light. Review list of mechanical fault codes in table below. NOTE: If one or more electrical related fault codes for EGR Valve are also present in CDI, utilize Complaint C. Review list of electrical fault codes PDF document in attachments. Complaint C: One or more electrical related fault codes for EGR Valve stored in CDI control unit, with possible Check Engine Light. Review list of electrical fault codes PDF document attached. Cause Cause of Complaint A: Increased friction between the EGR Valve blade and seat due to soot deposits causing a delay of the EGR Valve being able to reach the target value of the EGR Valve position controller. NOTE: This causes the EGR Valve blade and potentially the boost pressure controller to oscillate. Cause of Complaint B: Soot deposits between the EGR Valve blade and seat leading to the EGR Valve no longer being able to meet the desired target of the EGR Valve position controller. Cause of Complaint C: Internal EGR Valve or other electrical faults related to the EGR Valve function. - [LI14.20\-N\-073867](/bulletins/11017565.md), 2025-05-02, Service bulletin: ENGINE. EGR Valve Diagnosis and Cleaning Procedure using TUNAP 926® on 906, 907 Sprinter with OM642 Diesel Engine Complaint Complaint A: The engine is jolting/bucking between 1700 and 1900 rpm. Complaint B: One or more mechanical related fault codes for EGR Valve stored in CDI control unit, with possible Check Engine Light. Review list of mechanical fault codes in table below. NOTE: If one or more electrical related fault codes for EGR Valve are also present in CDI, utilize Complaint C. Review list of electrical fault codes PDF document in attachments. Complaint C: One or more electrical related fault codes for EGR Valve stored in CDI control unit, with possible Check Engine Light. Review list of electrical fault codes PDF document attached. NOTE: This LI supersedes LI14.20\-N\-073813, which is no longer valid. Cause Cause of Complaint A: Increased friction between the EGR Valve blade and seat due to soot deposits causing a delay of the EGR Valve being able to reach the target value of the EGR Valve position controller. NOTE: This causes the EGR Valve blade and potentially the boost pressure controller to oscillate. Cause of Complaint B: Soot deposits between the EGR Valve blade and seat leading to the EGR Valve no longer being able to meet the de\- sired target of the EGR Valve position controller. Cause of Complaint C: Internal EGR Valve or other electrical faults related to the EGR Valve function. - [CXA 3\_25\_NOx](/bulletins/11016309.md), 2025-04-02, Other: ENGINE. CX Advocate for NOx conversion low faults - [CXA 2\_25\_Turbo Oil Drain](/bulletins/11014819.md), 2025-03-04, Other: ENGINE. CX Advocate for turbo oil drain cracking - [CXA 2\_25\_NOx](/bulletins/11014818.md), 2025-03-04, Other: ENGINE. CX Advocate for NOx conversion low faults JSON: [/v1/bulletins/10126806](/v1/bulletins/10126806) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2015-028A&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10126806&vehicle=Service%20bulletin%2015-028A)