Open the housing
Press the release button and withdraw the valet key. Pull back the rear cover to expose the battery. Use a small flat-blade screwdriver gently to lift the cell out of its retaining clips.
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Keep the original orientation
Observe the old cell’s position before removing it completely. Install the fresh CR2032 in the same orientation and position, seated in the clips. Do not force the clips to accommodate a different battery size.
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Close both latches
Slide the outer cover back into place until it clicks. Reinsert the valet key into the bottom of the housing until its latch clicks too. Check that neither part is loose. Keep removed coin cells away from children and arrange appropriate battery recycling.
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Sources / references 1
- BMW — manufacturer instructions ↗Reviewed Oct 8, 2026
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