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  1. Need experienced coder in San Diego

    E39 M5 and E52 Z8 Discussion
    Hi all, I'd like some help getting a stock flash back on my car to pass CA emissions. I currently pass all visual checks but was told 2 of my 6 readiness checks failed, the evaporative system and oxygen sensor. I believe previous owner flashed an alpha N tune. Currently all stock emissions...
  2. What is this?

    E39 M5 and E52 Z8 Discussion
    Came across this while checking fuses today, underneath the passenger glovebox. It looks like an ethernet cable. Is this a factory hookup to the car's computer, or something aftermarket I have yet to discover? BTW: the picture is upside down, but you get the idea... Thanks in advance!
  3. Upgraded Mark IV, country code reset

    E39 M5 and E52 Z8 Discussion
    After much research, upgraded the Mark III nav unit in my '01 to a Mark IV. Upon installation, found the Mark IV had a custom splash screen, upon further research, downrevved from V32 software to V30 then back to V32 to remove the custom splash image. Somewhere along the way this appears to have...
  4. Cannot get rid of Code P0128 on 2001 M5

    E39 M5 and E52 Z8 Discussion
    I cannot get rid of the Code P0128 "Coolant Thermostat Coolant temp below thermostat regulating temp". I am on my 4th mechanic. Thermostats replaced 3 times, temp sensor, water pumps (secondary pump done at the dealer) even my radiator. I had it finally at the dealer who said it was the Aux...
  5. Throttle Actuators Codes Malfunction

    E60 M5 and E61 M5 Touring Discussion
    We see our cars are reporting increasingly on faulty throttle actuators so I decided to make this thread to understand the codes the car may gives and find solutions. Of course with your help, it will be greatly appreciated. If your car goes in limp mode during driving or at starting the car...
  6. Peake code 8d

    E39 M5 and E52 Z8 Discussion
    Hello all, I keep pulling peake code 8d "fuel level, plausibility". No difference was felt in the driving. I searched all over and I didnt find conclusive results. Can someone please help me diagnose the problem? Thanks