Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
SF-393-AB
FREIGHTLINER (WESTERN STAR 4900): BATTERY DISCONNECT SWITCHES-SANJEL CORP. ONLY. THE WIRING FOR THE BATTERY DISCONNECT SWITCH IS NOT CONSISTENT AMONG VEHICLES. EXISTING BATTERY DISCONNECT SWITCHES WILL BE REPLACED. CSC LETTER WAS RECEIVED. *PE
06M-6
DETROIT DIESEL CORPORATION (DDC) HAS DETERMINED THAT ADDITIONAL SUPPORT BRACKETS WILL NEED TO BE ATTACHED TO THE EXISTING LIFTER BRACKET IN ORDER TO REINFORCE THE LIFTER BRACKET/WATER PUMP HOUSING ASSEMBLY. MBE 4000 EPA 04 ENGINES EQUIPPED IN FREIGHTLINER, STERLING, AND WESTERN STAR APPLICATIONS ARE AFFECTED. *NJ
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.