2011 Volvo C70FACTORY OEM SERVICE PROCEDURE

Replacing A Component

The subwoofer module (SUB) has registered an internal fault.

If the fault is intermittent it means that it has been registered previously but is no longer present. Intermittent faults can occur for a number of different reasons. The fault is evaluated depending on how it occurs. If the fault recurs, replace the subwoofer module (SUB).

In the event of a permanent fault, replace the subwoofer module (SUB).

Remedy as necessary.

Other information 

Fig 1: Identifying Subwoofer Module (SUB)
GLL152226Courtesy of VOLVO CARS CORPORATION
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:

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