2014/05/16 Caterpillar

Compact Track Loader:

259D (S/N: FTK1-361; GTK1-132; FTL1-1130)

279D (S/N: GTL1-831; RCX1-338)

289D (S/N: TAW1-1213; A9Z1-392)

299D (S/N: GTC1-826)

299D XHP (S/N: JST1-513)

Multi Terrain Loader:

257D (S/N: EML1-120; FMR1-151; EZW1-300)

277D (S/N: NTL1-282; FMT1-323; MLT1-160)

287D (S/N: TLK1-205; HMT1-341)

Skid Steer Loader:

236D (S/N: SEN1-279; MPW1-424; BGZ1-470)

242D (S/N: DML1-156; DZT1-462; A9W1-188)

246D (S/N: BYF1-735; JSL1-236; HMR1-598)

262D (S/N: DTB1-1057; KTS1-257; LST1-273)

272D (S/N: B5W1-525)

272D XHP (S/N: ETL1-307)

A new 458-6660 Machine Software Gp is now available for the machines listed above. The new machine software group updates the following changes in the machine Electronic Control Module (ECM).

• Corrects Un-commanded Motion Detection (UCMD) error on MTL/CTL resulting from 8V sensor network shorts to ground.

• Reduces false UCMD shutdown events during 2-Speed upshift.

• Restores functionality of the 30 second Anti-Theft Grace Period option.

• Added Raise Only Self Level to 242D, 257D and 259D machines.

• Added the ability to clear Anti-Theft PINs through ET after MSS is uninstalled.

• Minor Self Level retuning to some models.

• Corrected Auxiliary Rate Limit issue that would cause a bucket claw to drift closed briefly after command as halted.

• Improved UCMD at low Creep speed settings.

• Corrected drive solenoid current dither setting. This setting could result in poor start-to move, delayed or sluggish steering response, poor"straight-line" tracking at lower travel speeds or creep settings.

• Corrected COOL Mode (Parked Start-Up) elevated engine idle value.

• Corrected Glow Plug not functioning issue on Tier 4i/Tier two models.

• Corrected false codes E876 for High Voltage.

• Added COLD Mode (Parked Running) elevated engine idle feature.

• Contained minor Snubbing improvements.

• Corrected minor Creep speed display bug.

• Corrected Selectable Pattern feature installation bug.

• Corrected Software Enabled Attachment (SEA) retention during software update.

• Moved Speed Limit setting from operator profiles to the master profile only.

• Added minimum Speed Limit setting of 20 percent of maximum.

• Increased the speed of Creep ON/OFF commands.

• Increased number of Invalid Anti-Theft PIN attempts from three to five before lockout period employed.

• Increased Minimum Fan Speed Calibration range for certain models.

• Improved Self Level Calibration success rate.

• Improved 2-Speed Shift tuning.

Go to SIS Web to make sure that the new Flash File part number is still the latest Flash File part number. A newer Flash File part number may be available. SIS Web only displays the latest available flash file. The new software is available in the form of a flash file through Caterpillar Service Information System (SIS).

Note: Use the latest version of Caterpillar Electronic Technician (Cat ET) for the optimal machine software support and use "WinFlash" to flash the new 458-6660 Machine Software Gp onto the Module.

The 458-6660 Machine Software Gp is adaptable to all the machines that are listed above.