Have you checked out the electric A/C compressor or have you noticed any issues with the A/C? Those pumps are pretty notorious for breaking down internally, causing aluminum to get pushed through with the refrigerant and the high voltage shorting/bleeding into the low voltage 12v system. The insulation, also called the isolation, is a system that monitors and ensures the isolation between the 12v low voltage system and the high voltage system. If it detects high voltage on the 12v system, it will throw an isolation fault. There is a braided mesh wire (12v) within the insulation of the high voltage wires that is monitored throughout the system and common chassis ground. If a wire gets pinched, wire insulation breaks down, or a component (such as the electric A/C compressor) shorts internally, the system will measure higher voltage on the 12v system and throw said fault. You can usually narrow it down by disconnecting or isolating components and HV wires, then monitoring the isolation test values to see if the high voltage is still present on the 12v system. That requires the BMW diagnostic software though... just be careful and don’t work on a live hv system.
I think you are right... I'm having the same issue with the below threshold isolation.... additionally the a/c compressor shows a an INTERNAL FAULT. not moving or else.. Short circuit might be causing the isolation problem. I'll disconnect the HV cables to the a/c while the new/remanufactured compressor arrives... typical codes are as follow :21F0E3 21F0E4 22280F 222814 there are some TSB addressing this problem. static.nhtsa.gov/odi/tsbs/2016/MC-10151374-9999.pdf
Hi Shaun, I'm having the same problem with my car and I finally found the EME module online but after watching your video, maybe it can be fixed without me having to replace it. I was just wondering, do you know what coding tool you need to have if the EME has been replaced or anything changes with it? I'm not sure which scanner tool I should be looking for and I cant move forward without it. Thank you!
You need the full bmw ista system and possibly an icom programmer to allow module replacement. A basic ethernet obd cable works for diagnostic and programming.
@@ShaunDobbie sounds complicated. Do you have a video up of this ista system and icon programmer? Is it a website or an app I dont understand. And can you link a basic obd cable that I would need, I would appreciate it. I had no idea all of this was involved in programming the EME module
@@ShaunDobbie Wait... you didn't use the safety HV disable connector in the front of the car?? The same one used when swapping the 12v battery. That's the ONLY way to know the HV is completely disabled!
It was deactivated as I either used the disconnect in the front or the disconnect on the HV connector itself. It's impossible to remove the high voltage cable without deactivating the system.
Hi. I just got the same message and after talking to bmw, it seems it may be due to a software problem in external charging stations!? Any new insights on this?
Hi. What is the car mileage now you have o your i3 ? Thx. In your videos there are many problems with i3 i don't understand why. My i3 2014 is only 30K kilometers and no problems.
@@Smartichello But 5000km is only equal to 3106 miles. How can a car with 18,000 miles on it (28,000km) now have only 5000km 7 month later? Makes no sense.
I haven't done anything to fix it but it's possibly a big job requiring replacement of a high voltage cable or one of the units into which a high voltage cable is connected.
@@ShaunDobbie I replaced my hv cable and safety box in about 10 hours not rushing. car has been broke for about 7 months bmw wanted 10K+ to repair got it done for around 700 myself.
Have you checked out the electric A/C compressor or have you noticed any issues with the A/C? Those pumps are pretty notorious for breaking down internally, causing aluminum to get pushed through with the refrigerant and the high voltage shorting/bleeding into the low voltage 12v system.
The insulation, also called the isolation, is a system that monitors and ensures the isolation between the 12v low voltage system and the high voltage system. If it detects high voltage on the 12v system, it will throw an isolation fault. There is a braided mesh wire (12v) within the insulation of the high voltage wires that is monitored throughout the system and common chassis ground. If a wire gets pinched, wire insulation breaks down, or a component (such as the electric A/C compressor) shorts internally, the system will measure higher voltage on the 12v system and throw said fault. You can usually narrow it down by disconnecting or isolating components and HV wires, then monitoring the isolation test values to see if the high voltage is still present on the 12v system. That requires the BMW diagnostic software though... just be careful and don’t work on a live hv system.
I think you are right... I'm having the same issue with the below threshold isolation.... additionally the a/c compressor shows a an INTERNAL FAULT. not moving or else.. Short circuit might be causing the isolation problem. I'll disconnect the HV cables to the a/c while the new/remanufactured compressor arrives...
typical codes are as follow :21F0E3 21F0E4 22280F 222814
there are some TSB addressing this problem.
static.nhtsa.gov/odi/tsbs/2016/MC-10151374-9999.pdf
Toy are a true legend!
great job
How do you change the kls and do you have the program the whole entire car?
How did you test the cables before investigating pal? Did you do anything when refitting like contact cleaner or grease?
The hv system was deactivated. Contacts were clean.
Hi Shaun, I'm having the same problem with my car and I finally found the EME module online but after watching your video, maybe it can be fixed without me having to replace it. I was just wondering, do you know what coding tool you need to have if the EME has been replaced or anything changes with it? I'm not sure which scanner tool I should be looking for and I cant move forward without it. Thank you!
You need the full bmw ista system and possibly an icom programmer to allow module replacement. A basic ethernet obd cable works for diagnostic and programming.
@@ShaunDobbie sounds complicated. Do you have a video up of this ista system and icon programmer? Is it a website or an app I dont understand. And can you link a basic obd cable that I would need, I would appreciate it. I had no idea all of this was involved in programming the EME module
You shouldnt touch any part of the high voltage system without wearing insolating gloves, for your own safety
It was deactivated.
@@ShaunDobbie Wait... you didn't use the safety HV disable connector in the front of the car?? The same one used when swapping the 12v battery.
That's the ONLY way to know the HV is completely disabled!
It was deactivated as I either used the disconnect in the front or the disconnect on the HV connector itself. It's impossible to remove the high voltage cable without deactivating the system.
Its always the heater if this problem occurs
Hi. I just got the same message and after talking to bmw, it seems it may be due to a software problem in external charging stations!?
Any new insights on this?
I don't have the car anymore, but in my case it was the ac compressor.
I got this error and then my ac went out. I’m assuming it’s related. Do you think if I replace the ac compressor I’ll be back to normal?
Could be the compressor or the hv cable going to it.
Same thing!!! My ac doesn’t work right plus I have drive train warning now
I got this error and my ac went out too. However I have 16 BMW 330e.
Hi. What is the car mileage now you have o your i3 ? Thx. In your videos there are many problems with i3 i don't understand why. My i3 2014 is only 30K kilometers and no problems.
60000 miles
So, 7 months ago your 6 year old 2014 BMW i3 only had 18,600 miles on it?
@@mamadouaziza2536 yes. Now +5000 km
@@Smartichello
But 5000km is only equal to 3106 miles. How can a car with 18,000 miles on it (28,000km) now have only 5000km 7 month later?
Makes no sense.
@@mamadouaziza2536 i have two another cars also
I want to know how to change the k l e
How did you fix it? My 03 18k miles says same thing but will not drive.
I haven't done anything to fix it but it's possibly a big job requiring replacement of a high voltage cable or one of the units into which a high voltage cable is connected.
@@ShaunDobbie I plugged up my scanner and I am getting a p0606 code which is a ecm/ pcm error code
@@ShaunDobbie I replaced my hv cable and safety box in about 10 hours not rushing. car has been broke for about 7 months bmw wanted 10K+ to repair got it done for around 700 myself.
@@19schneider85 hi, what cable did you replace ? From EME to AC ?
How to unlock battery after accident ?
how can you switch off the HV system to touch all those cables ?
Pulling the disconnect plug under the bonnet.
Cant say i would want to own an I3 after all the problems you've had
Neither would I.
These cars need routine maintenance that is on a schedule.. Always follow the schedule