2011 Acura MDXFACTORY OEM SERVICE PROCEDURE

Automatic Lighting System*

The relay control module controls the automatic lighting based on inputs from each switch.

Β  Input Output
Relay control module IG1 power supply Headlight low beam relay
Headlight relay circuit (HIGH)
Taillight relay circuit
B-CAN IG1 power supply signal Automatic lighting signals
Combination light switch (HI/PASSING/AUTO)
Relay control module messages

*: This system can be customized using the multi-information display (MID) to suit the customer's needs. For more information about customizing options, refer to the Owner's Manual.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.