[AlbertoSONIC]

Hi everyone, some time ago I've been involved in a crash in which I broke the AC radiator. The mechanic replaced it and filled AC gas but now the AC isn't working anymore. He told me that the AC compressor has activated a sort of protection and locked up, so he told me I need to go to a bmw dealer to unlock it. Is this possible? I tried to read error codes using Bimmerlink but I'm not getting anything. Given that I have the obd-ethernet cable, is there something I can do with e-sys or other bmw software to fix it on my own?

[atzebmw]

I just searched in ISTA/Rheingold for some hints for a compressor protection lock, but i found nothing.
You can try to read the error memory with ISTA/Rheingold and there should be some errors for the compressor and solution tips.

Here you can ask for ISTA/Rheingold:
https://f30.bimmerpost.com/forums/sh...highlight=ISTA

[AlbertoSONIC]

Originally Posted by atzebmw

I just searched in ISTA/Rheingold for some hints for a compressor protection lock, but i found nothing.
You can try to read the error memory with ISTA/Rheingold and there should be some errors for the compressor and solution tips.

Here you can ask for ISTA/Rheingold:
https://f30.bimmerpost.com/forums/sh...highlight=ISTA

While waiting for the enet cable to arrive, I've tried to read error memory with Bimmerlink. I don't see anything related to it... what do you think? Which ecu should be responsible of this issue?

ZGW
2 errors
CD0487: SYNCHRONIZATION FAILED, CC WAS NOT SYNCHRONIZED WHEN DEBUG LOCK WAS RELEASED
801C20: CENTRAL FAULT MEMORY FULL

MOTOR
2 errors
283400: LAMBDA PROBE TO KAT, HEATING CONTROL: INTERRUPTION
282E00: LAMBDA PROBE TO KAT, HEATING CONTROL: SHORT CIRCUIT TO POSITIVE

ICMQL
1 error
480134: SBS FUNCTION - DIRECTION OF TRAVEL UNCERTAIN AT VX GREATER THAN 2 M/S

KOMBI
1 error
B7F668: COMBI: SYSTEM TIME HAS BEEN RESET

MMI
4 errors
B7F850: CONNECTION HEAD UNIT TO THE MICROPHONE 2: LINE INTERRUPTION
B7F8C3: CID DOES NOT RESPOND (HARDWARE FAILURE: FAILURE OF CID COMMUNICATION)
B7F8CB: IMAGE DATA INVALID OR INCORRECT E1C447: MOST: A CONTROL UNIT HAS LOGGED OFF

FRM
4 errors
030195: FH BFH: INVALID CHARACTERISTIC, NO STANDARDIZATION AVAILABLE 030196: FH BFH: MOTOR TEMPERATURE EXCEEDED 90 PERCENT THRESHOLD 030197: FH BFH: MOTOR RUNNING INTERRUPTED DUE TO OVERTEMPERATURE 0301A0: FH BFH: SYSTEM IS NOT NORMALIZED

And in info memory (only klima related.. am I looking for the wrong thing?)

KLIMA
3 errors
078022: MESSAGE (VEHICLE CONDITION, 0X3A0) IS MISSING 07802B: COMM_E_NET_START_IND_CHANNEL_0
078043: LINIF_E_RESPONSE

[atzebmw]

That's a lot of error messages.
But that's the only message related to your problem i think.

Originally Posted by AlbertoSONIC

KLIMA
3 errors
078022: MESSAGE (VEHICLE CONDITION, 0X3A0) IS MISSING 07802B: COMM_E_NET_START_IND_CHANNEL_0
078043: LINIF_E_RESPONSE

Actually the ecu is called IHKA or IHKA2.

Did you try to delete the error memory?

[AlbertoSONIC]

Originally Posted by atzebmw

That's a lot of error messages.
But that's the only message related to your problem i think.

Actually the ecu is called IHKA or IHKA2.

Did you try to delete the error memory?

I tried to clear error memory this morning, then turned on engine and ac and... it didn't work. And not a single error came up. Is it possible that it's not signaling anything?

The compressor clearly isn't engaging, the rpm keeps stable when I press the AC button..

[hatak]

Originally Posted by AlbertoSONIC

While waiting for the enet cable to arrive, I've tried to read error memory with Bimmerlink. I don't see anything related to it... what do you think? Which ecu should be responsible of this issue?

ZGW
2 errors
CD0487: SYNCHRONIZATION FAILED, CC WAS NOT SYNCHRONIZED WHEN DEBUG LOCK WAS RELEASED
801C20: CENTRAL FAULT MEMORY FULL

MOTOR
2 errors
283400: LAMBDA PROBE TO KAT, HEATING CONTROL: INTERRUPTION
282E00: LAMBDA PROBE TO KAT, HEATING CONTROL: SHORT CIRCUIT TO POSITIVE

ICMQL
1 error
480134: SBS FUNCTION - DIRECTION OF TRAVEL UNCERTAIN AT VX GREATER THAN 2 M/S

KOMBI
1 error
B7F668: COMBI: SYSTEM TIME HAS BEEN RESET

MMI
4 errors
B7F850: CONNECTION HEAD UNIT TO THE MICROPHONE 2: LINE INTERRUPTION
B7F8C3: CID DOES NOT RESPOND (HARDWARE FAILURE: FAILURE OF CID COMMUNICATION)
B7F8CB: IMAGE DATA INVALID OR INCORRECT E1C447: MOST: A CONTROL UNIT HAS LOGGED OFF

FRM
4 errors
030195: FH BFH: INVALID CHARACTERISTIC, NO STANDARDIZATION AVAILABLE 030196: FH BFH: MOTOR TEMPERATURE EXCEEDED 90 PERCENT THRESHOLD 030197: FH BFH: MOTOR RUNNING INTERRUPTED DUE TO OVERTEMPERATURE 0301A0: FH BFH: SYSTEM IS NOT NORMALIZED

And in info memory (only klima related.. am I looking for the wrong thing?)

KLIMA
3 errors
078022: MESSAGE (VEHICLE CONDITION, 0X3A0) IS MISSING 07802B: COMM_E_NET_START_IND_CHANNEL_0
078043: LINIF_E_RESPONSE

Hi I have 430i f36 after program modification, I've noticed that you have same 2 errors as me
030196: FH BFH: MOTOR TEMPERATURE EXCEEDED 90 PERCENT THRESHOLD 030197: FH BFH: MOTOR RUNNING INTERRUPTED DUE TO OVERTEMPERATURE

I'm wondering if your car is also chip tuned?

Regards
Maciej