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Hello, my name is Bobby. Thanks for the question. Is the check engine light coming on also?
I am sorry. I was unable to get back online yesterday. Most of the time this is caused by a circuit issue within the transmission. It can be a failure in the transmission temperature sensor but most of the time it is the harness. Is the vehicle still under warranty?
A wiring issue within the transmission would cause all of these issues except for the turn signal. If the battery is failing or if the connections at the battery are failing or dirty then this can happen also if there is a lack of voltage in the system.