Audio program

2011 BMW 335xi 4D Sedan, AutomaticSECTION Audio program

The audio systems are divided into 3 levels:

  • Stereo system
  • HiFi system (additional analog amplifier)
  • Top HiFi system (additional Top HiFi amplifier connected via MOST)

The audio systems differ in that various sound pressures can be achieved or there is improved system linearity. The stereo system consists of 6 loudspeakers; the HiFi system or Top HiFi system consists of 10 loudspeakers and various auxiliary amplifiers. The central bass speakers are located under the front seats.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

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.