BMW Coupes and Sedans 1970-1988 Repair Guide

Electronically Tuned Radio (ETR)



See Figures 1, 2, 3 and 4

Most 1984 and later models are equipped with an electronically tuned stereo system; this system uses push buttons instead of knobs for radio control.

If equipped with a theft deterrent radio, make note of the radio code supplied on a tag with the owners information. As an anti-theft feature, the code must be entered into the radio once power has been removed.

  1. Turn the ignition switch to the OFF position.
  3. Determine the type of removal method needed, and proceed with one of the three options that follow:

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Fig. Fig. 1: Use a pick tool to open the trim door at the side of the unit-side screw model

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Fig. Fig. 2: Use an Allen key to loosen the retaining screw securing the radio in place

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Fig. Fig. 3: Unplug the antenna wire from the back of the radio

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Fig. Fig. 4: Unfasten the power and speaker plugs from the radio

Insert radio removal hooks into the holes at the sides of the radio chassis. Seat the hooks and pull the radio out. Disconnect the plugs.
If not equipped with holes at the sides of the chassis, pull the knob off and insert the hooks at the holes at the cassette opening and pull out.
If equipped Allen head with screws at the edges of the chassis, remove the screws and pull the chassis out.

To install:
  1. Connect the plugs and place the radio in the opening. Snap into place or install the angled screws.
  3. Enter the radio code to activate the radio.