Im getting terminal 30  g_f 

im unsure what the issue is i dont want to start replacing parts that might not be the issue i can drive it and drives fine once i gas its on park and it cut off but not all the time 

but now when i parked it even if its for 10 mins it will crank slow or not start on first try 

 

Morning Erick

Welcome to the Forum

At a guess from your brief description the 30 G-F relay is at fault or failing 

If the relay is failing circuits can remain ON when they should shut down killing battery power, when this condition occurs check Battery Voltage at the under bonnet terminals anything below 12v is not good.

Get a good wiring diagram identify and change the relay, fully charge the battery 

If it helps here is the current relay designations

Terminal New Name Description

Terminal 0Terminal 0 is a logical terminal and does not provide a power supply. Terminal 0 comprises Terminal 30, Terminal 30B and Terminal 30F.Terminal 15Terminal 15/Terminal 15NTerminal 15 is used to signal the status “Ignition ON/Ignition OFF” rather than as a power
supply. That applies, for instance, in the case of the digital motor electronics (DME), the
footwell module (FRM) and BMW Night Vision.

Terminal 15 N (Overrun) is used for control units and electrical loads operating at status
“Ignition ON” when the vehicle is being driven. That applies, for instance, to the lane
departure warning (SWW), short range radar (SRR) and Night Vision.Terminal 15WUPTerminal 15 Wake-up is used to wake up control units that can not be woken up by bus communication.Terminal 30Control units and components that must continue to function up to the point when the battery is completely discharged are connected directly to the continuous positive, Terminal 30. That relates to units such as the Car Access System 4, roof function center and the junction box module.Terminal 30gTerminal 30BTerminal 30 Basic is used for control units and electrical loads operating when the driver is present. That applies primarily to components such as the seat module, digital
motor electronics (DME), gearbox control unit (EGS), Controller and CD changer.Terminal 30g_fTerminal 30FTerminal 30 Fault is used for control units operating in the driver’s absence. That applies, for instance, to the trailer module (AHM), footwell module (FRM), instrument cluster and automatic climate control module (IHKA).Terminal 50Terminal 50 is provided for controlling the starter motor.Terminal R

Hope this helps

Dave