6R IMPOSSIBLE IMMO PROBLEM

[gorkem]

Hello everyone. I have a 6R 1.2 TDI Bluemotion. And I am struggling with an immo problem for months. Let's begin with the story.

I had my check engine light on for a few days so a friend of mine said that he had a bluetooth obd device. We connected it to my car and erased the fault codes. I don't really remember what were the fault codes but I do remember that they were not serious problems. So after the check engine light goes off, I stopped the engine. And then I tried to start the engine, glow plug light came on and IMMO-BILIZER ! error came on the cluster and car didn't start. I went a couple ECU workshops and none of them could figure it out. They said their devices couldn't see/communicate with the ECU. And I found an electronics technician at the end. He also couldn't fix it. So we find a another ECU for 1.2 TDI and swapped it. After a couple days of coding and adapting engine started but the error line "IMMO-BILIZER" on the cluster stayed still. I was in a small town for college and the epidemic in Turkey had just started. So I needed to go back to my hometown, the mechanic said that I need to re-adapt the keys to the cluster but the nearby locksmith was not so good, he said me to do it in my hometown.

After I came back to my hometown I went to a professional car locksmith and said that we need to re-adapt the keys. He said that there was an error so we can adapt new keys but could not erase the old ones. I went a couple more electronic workshops and however they tried, they all said that my cluster needs to be changed. After a couple of months I found a new workshop and talked with them. They tried to adapt an another cluster but also failed. Some of the technicians said it needs to be in exact same part number (which is 6R0 920 861H) but some other said it really does not matter if 861H or another (etc. 861L, 861M, ...) .

I cannot work this through with the VW dealership/workshop because of the exchange rates their prices are unbelievably high. In the conclusion, I can not solve this problem for months now. And I used to use it with Stage 1 ECU remap but I can not remap it again because of this problem. And I really need a custom map because I also need a downpipe with DPF off due to bad fuel quality in my country (my DPF fills in about 2 or 3 weeks regularly) .

I can find and buy a used cluster but the 861H ones are pretty rare so it would be possibly a different number. Or maybe by luck it can be an Amarok cluster. Basically nobody could not solve this problem that I have met. Any tip or help could be really helpful and appreciated. I'm sorry if I made mistakes writing this topic, English is not my native language. Thanks in advance.

[iichel]

Find a set of a used cluster, ECU, keys and lock and get that tuned later

[amer6R]

The safest and best option is what iichel recommended, maybe your ignition switch lock was faulty? And not the cluster

[gorkem]

Finding and adapting a whole set seems to be the last chance. Ignition switch lock seems fine. There is no fault codes for it. But what can't I understand is how could my cluster be broken with just one fault code cleaning If a make a full vcds scan can anyone look up to it? After all this visits to many workshops, I honestly can't trust any of them.

[spacewalker]

soo much talking and blaming locksmith and parts ....but nobody know the reall error in cluster , or ECU
not sure if any1 can help if you dont even know proper errors

you do not even know if cluster see key / transponder, if ECU coresponding with cluster etc

this is a begining to be check

[amer6R]

But they pull the VIN and Immo code from ECU, then yhey should proceed to code the cluster like all keys lost.
Vin cluster should match VIN ECU

[gorkem]

soo much talking and blaming locksmith and parts ....but nobody know the reall error in cluster , or ECU
not sure if any1 can help if you dont even know proper errors

you do not even know if cluster see key / transponder, if ECU coresponding with cluster etc

this is a begining to be check

Sorry but this electronic stuff is not kind a stuff im really familiar with. Never had a problem like this before so im basically a rookie. I will make a scan with vcds or Odis and post all the faults here if anyone can figure it out. All I think is somehow cluster matches with the key and lets car ignite but the immo! error is a whole question.

[gorkem]

But they pull the VIN and Immo code from ECU, then yhey should proceed to code the cluster like all keys lost.
Vin cluster should match VIN ECU

I think cluster and Ecu matches somehow but the cluster does not allow to proceed the coding. Will make a full scan and lets see whats the fault.

[gorkem]

IMG_2509.jpg (4.08 MiB) Viewed 4672 times

Translation :
J285 - Instrument Cluster - Instrument Cluster Unit
0017 - Instrument cluster
10485833 B200049 Control module faulty (10001001 active/static)

IMG_2507.jpg (4.75 MiB) Viewed 4672 times

Translation :
Key Adaptation
0025 - Immobilizer
9456896 B104D00 Incorrect key programming (00001001 active/static)

So these are the errors.

[amer6R]

Your eeprom memory on cluster is f****d up
Remove eeprom, set in soip clip than find flash on net reflash, set it back. And try it again
Checksum doesnt match up, someone f. Up

[gorkem]

Your eeprom memory on cluster is f****d up
Remove eeprom, set in soip clip than find flash on net reflash, set it back. And try it again
Checksum doesnt match up, someone f. Up

Can you explain step by step if its not too much trouble ? Or should I just buy an used cluster ?

[amer6R]

If you google "10485833 B200049" you will see that is a Hex Sum error in the cluster. There is a chip called Eeprom on cluster that stores hex memory. You eletrician should find a eeprom dump for your cluster and reflash it, and than try to pair the keys to cluster.
I think thats why its rejecting the key programming.

[spacewalker]

with proper immo tool this is 15min work,
if data is not match with serial number cluster etc ..forget about ODIS

[gorkem]

I couldn't find someone to program eeprom and just about to give up, I found a cluster from amarok with mfa for a very good price so i purchased it. You guys think i can swap clusters on my own ? If so, what should i use odis or vcds?

[amer6R]

No, you need Abrites or something similar.