Cruise control – AEM 30-3510 Infinity Plug & Play Harnesses - BMW 2001-2006 E46 M3 User Manual

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2001–2006 BMW E46 M3

CRUISE CONTROL

Currently, a cruise control feature is not
supported with the AEM Infinity. However,
the multi-functional steering wheel buttons
are run over the BMW MFL bus and are
available for miscellaneous purposes
described below. There are 4 buttons:
Enable, Resume Set, Accelerate+, and
Decelerate- (as shown).

The Enable button now engages the 3-step rev
limiter channel “CAN_CCEnable”. A 3-step rev
limiter is a simplified traction control based
system that uses engine and vehicle speed or
launch timer inputs to limit the RPM of the
engine. To operate, first be sure the
3StepSwitch table is set to recognize the
“momentary” Enable button, as shown. Set
the 3StepTargetFuel and/or the
3StepTargetSpark table’s first (0 MPH) cell to
the desired launch RPM. When the Enable
button is held down, the EMS will limit the

engine’s corresponding RPM. Once the car is launched and the EMS begins to register vehicle speed,
the RPM limit can then be tailored to prevent wheel spin using these tables.

The Resume Set button is used as an
AEM traction control switch. Note:
The DSC button is not available as
it is a direct link to the VDC. The
BMW VDC system is disabled
when using the AEM Infinity. Instead, the latching Resume Set button changes the TC_SlipTargetTrim
1-axis lookup table (shown). Simultaneously, the Cruise Control icon on the dash is illuminated to inform
the driver the status of the programmable AEM traction control. Normally this table is used with a
multiple position switch. However, because the BMW Resume Set button is either OFF (0) or ON (1),
only the first two cells of the table are used. Two possible traction scenarios, for example, could be ON/
OFF or aggressive/nonaggressive. To use this feature, it must be enabled in Infinity Tuner: Plug-Ins |
Wizard | Setup wizard | Traction Control | Traction Control Enable.