This TSB applies to all Mercedes-Benz vehicles featuring Sdconnect rechargeable batteries. If Star Diagnosis Sdconnect multiplexer rechargeable batteries are tarnished or feature crystallization on the contacts, the Sdconnect display will read “!Batteries cannot be charged!”

To remedy this, check the rechargeable batteries and clean. If necessary, replace the batteries if they are defective according to the instructions in the Sdconnect manual, Chapter 2.3.2. Should batteries be replaced without effect, replace the device. To do this, contact the SDS Hotline at 201-505-4630.

After cleaning or replacing the batteries, the message “!Batteries cannot be charged!” should disappear after two to three minutes.

Inspect the Sdconnect batteries for tarnish or crystallization. Clean and check for condition.

Inspect the Sdconnect batteries for tarnish or crystallization. Clean and check for condition.

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