Yeah, it does. Regens are automatic, and the folks at Freightliner I've talked to all mention that parked regens shouldn't start happening until well over 500k miles.
They do have a problem with something called the intake throttle control valve. Looks like a large butterfly plate valve that's controlled by a solenoid. The solenoid goes bad, causing the valve to lock open - and that will prevent an automatic or parked regen from happening.
If you get a check engine lite, or the engine malfunction indicator along with it (and associated flash codes) you'll need to get into a Freightliner or Detroit shop ASAP. Eventually it leads to the engine shutting down.