If an error occurs while playing an iPod® or USB flash drive, you may see the following error messages. If you cannot clear the error message, contact a dealer.

HFL Menus
Use HFL when the vehicle’s ignition is in the ACCESSORY (I) or ON (II)
position.
You can operate HFL by voice when on the PHONE screen. Below is the flow chart
showing available voice commands ...
Rocker Arm Assembly Installation
If the rocker arm assembly is disassembled, reassemble the rocker arm
assembly.
Apply engine oil to the end of the valve stem.
Install the rocker arm assembly.
...
Main Valve Body Disassembly, Inspection, and Reassembly (A/T)
Clean all parts thoroughly in solvent, and dry them with compressed air.
Blow out all passages.
Do not use a magnet to remove the check balls, it may magnetize the check
balls. ...