The answer depends on what equipment has your multi-function
display. I suggest you refer to the user manual.
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If the multi-function display is frozen on a Peugeot 406, the
computer may have to be reset. Unhook the positive cable on the
batter for a few minutes.
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multi function display
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You can change a bulb in the multi function display unit of a
307 by first making sure that the lamp is turned off. Then unscrew
the bulb and remove it from the lamp.
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The GLX model always had 4 bulbs in the multi-function display
jammy dodger.