I noticed an alert on my screen saying "Range and Charge capacity might be reduced. Schedule service soon." The error code displayed is BMS_a066. Upon further research I found that its an issue with high voltage battery and most of the battery packs are replaced. I already had a mobile service appointment scheduled for next Monday but I noticed the range dropped by 70 miles. Even considering the current weather in Bay Area, the drastic range drop overnight started bothering and so I called the Santa Clara service center to see if I can drop off my car to get it checked but they told me that they are refusing in drop in appointments and I have to wait for my mobile service appointment or call up roadside assistance and get them to check my car out and see if it needs immediate attention. Has any one faced a similar response from Tesla service center ? Is waiting my only option ?