Installed my BTS3 per instructions on my 2007 BMW Z4. Works great.
When I don't use the Z4 for 5-7 days the battery goes dead.
Without putting the key in the ignition can connect my iPhone 11 to the BTS3 cable and it starts charging.
Is this correct or could I have wired the power wire incorrectly.
Harold L
When I don't use the Z4 for 5-7 days the battery goes dead.
Without putting the key in the ignition can connect my iPhone 11 to the BTS3 cable and it starts charging.
Is this correct or could I have wired the power wire incorrectly.
Harold L
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