2004 Saab 9-5 Linear, AutomaticFACTORY OEM SERVICE PROCEDURE

Control Units

CONTROL UNITS LOCATION

Component Location
ACC Control Module In center of dash.
ADM Control Module Integral with rearview mirror.
DICE Control Module Above dashboard main relay board.
Ignition Discharge Module On camshaft cover.
Left AHL Control Module Behind left headlight.
PMM Control Module Above glove box.
PSM Control Module Under driver's seat cushion.
Right AHL Control Module Behind right headlight.
SPA Control Module (4 Door) On left side of luggage compartment, behind seat back.
SPA Control Module (5 Door) Under lower front of luggage compartment.
SRS/Air Bag Control Module Under center console, behind handbrake.
TC-ABS Control Module Behind battery, integral to hydraulic unit.
TCM Control Module On right side of firewall.
TRIONIC Control Module (OBD II) In right rear of engine compartment.
TWICE Control Module Under driver's seat.
Ventilation Fan Control Unit On driver's side of heating & ventilation unit, near firewall.
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.