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CONTROLS
erability of the standard buttons is retained
until the battery is completely discharged.
▷
Charge the battery for at least three hours
before using the display key for the first time
or if the key has not been used for an ex‐
tended period.
▷
The display key can be used while it is being
charged via the USB port. If the battery is fully
discharged, it may take some time before the
display key can be used again.
▷
Due to the large number of USB chargers
available on the market, it cannot be guaran‐
teed that every charger will function properly.
The charging time depends on the charger
used.
▷
Charging via the USB port may heat up the
charger and the display key.
Charging in the wireless charging tray may
heat up the tray and the display key.
At higher temperatures, the charge current
through the display key may be reduced, and
in isolated cases the charge process may be
interrupted temporarily.
▷
When inserting the display key into the wire‐
less charging tray, make sure there are no
objects between it and the wireless charging
tray.
Safety information
Warning
When charging a device that meets the Qi
standard in the wireless charging tray, any
metal objects located between the device and
the tray can become very hot. Placing storage
devices or electronic cards, such as chip cards,
cards with magnetic strips or cards for signal
transmission, between the device and the tray
may impair the card function. There is a risk of
injury and risk of damage to property. When
charging mobile devices, make sure there are
no objects between the device and the tray.
88
Opening and closing
Online Edition for Part no. 01405A38D29 - VI/21
Charging
Via USB
Connect the display key via the micro-USB
charging interface to a USB port.
In the center console
1.
Open the tray cover.
2.
Place the display key into the middle of the
wireless charging tray in front of the cup hold‐
ers.
Ensure that the display is facing up.
3.
Close the tray cover.
LED displays
Color
Meaning
Blue
The display key is charging.
The blue LED stays illuminated once
the inserted display key is fully
charged.
Orange The display key is not charging.
Temperature on the display key pos‐
sibly too high or foreign object in
charging tray.
Red
The display key is not charging.
Contact a dealer's service center or
another qualified service center or re‐
pair shop.
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