No start no crank. HELP!

JackSlater · 02-04-2023, 07:11 PM

I'm nearing the end of my rope with my 2004 Z4 2.5 automatic. The car won't start or crank, no codes via INPA or my Foxwell scanner. I've replaced the battery, starter, ignition switch and neutral safety switch. Fuses are all good. Key is being read successfully according to INPA, though the starter motor is being blocked due to P/N. When I go into INPA to look at transmission information, there are question marks under selector lever position, which is why I thought it was the neutral safety switch and replaced it to no avail. On the dash the current gear does not display in the box between the tach and speedo, which I also attributed to the P/N switch, but after replacing, the box is still blank. Any input would be greatly appreciated, thanks for your time and consideration.

pokeybritches · 02-04-2023, 11:47 PM

Can you confirm whether the TCU is getting power?

Rafichicago · 02-06-2023, 06:18 PM

Have you checked ground strap ?

02-04-2023, 07:11 PM	#1
JackSlater Registered 0 Rep 1 Posts Drives: 2004 Z4 E85 Join Date: Feb 2023 Location: North Carolina iTrader: (0)	No start no crank. HELP! I'm nearing the end of my rope with my 2004 Z4 2.5 automatic. The car won't start or crank, no codes via INPA or my Foxwell scanner. I've replaced the battery, starter, ignition switch and neutral safety switch. Fuses are all good. Key is being read successfully according to INPA, though the starter motor is being blocked due to P/N. When I go into INPA to look at transmission information, there are question marks under selector lever position, which is why I thought it was the neutral safety switch and replaced it to no avail. On the dash the current gear does not display in the box between the tach and speedo, which I also attributed to the P/N switch, but after replacing, the box is still blank. Any input would be greatly appreciated, thanks for your time and consideration.
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02-04-2023, 11:47 PM	#2
pokeybritches Colonel 479 Rep 2,782 Posts Drives: ESS/G-Power Z4M, VF Z4, 996tt Join Date: Sep 2009 Location: Los Angeles iTrader: (12) Garage List 2006 BMW Z4M [10.00] 2006 BMW Z4M [8.50] 2003 BMW Z4 3.0i [9.00]	Can you confirm whether the TCU is getting power? __________________ VF Engineering Z4 3.0i, ESS Z4M, G-Power Z4M, 996 Turbo
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02-06-2023, 06:18 PM	#3
Rafichicago Lieutenant 699 Rep 595 Posts Drives: 2018 M5 2009 E63AMG Wagon Join Date: May 2022 Location: Chicago IL iTrader: (0)	Have you checked ground strap ?
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