Nissan Qashqai / X-Trail / Rogue Smart Key - BCM's That Are Dangerous

**joker01** · 3rd September, 2022, 01:14 PM

ok ......
I talked to some people who also killed bcm juke so I don't feel like taking the risk .... I'll try with clone if the customer arrives .....
from what I read after bcm locks the jtag pcb port no longer communicates with mcu so even doing backup on bench in case of trouble you should unsolder mcu ....
this is information I found on this forum ......

**fred77** · 3rd September, 2022, 04:47 PM

Originally Posted by joker01

ok ......
I talked to some people who also killed bcm juke so I don't feel like taking the risk .... I'll try with clone if the customer arrives .....
from what I read after bcm locks the jtag pcb port no longer communicates with mcu so even doing backup on bench in case of trouble you should unsolder mcu ....
this is information I found on this forum ......

So your saying in can replace mcu with backup dump .... and all is well again

Interesting will do research also

what I'm unclear about is it's great doing backup on MCU but what changes (if any) are in other units on proramming a key?
Ie does ECU get updated. Prob not and all ok IF AND IF can actually do a real total backup of mcu via jtag

**joker01** · 4th September, 2022, 12:38 AM

friend i don't know if backup mcu can help ..... it's just my idea but i have no direct experience ..... if i get an akl i will try to do some tests .....

**joker01** · 8th September, 2022, 08:50 AM

customer arrived made only transponder clone .... I could not test ....

**turismou** · 12th November, 2022, 03:42 PM

I advise everyone that plans to do keys for there cars to check procedures very carefully. Go watch a video on YT for your tool or read and follow the instructions carefully.
Today I had a Qashkai 2014 proximity. The customer wanted a spare one and I told him there is risk. OBDSTAR have updated the list and show around 10 BCMs that are affected. This one was neither on the list nor here on thread. I went ahead to programming and missed a step where it said to turn ignition off after learning key no1. It got stuck with ignition ON and wouldn't switch off. I took the battery clam off for 10 secods and put it back on, luckily it was able to enter programming again and I managed to finish the job.
I must say that a part of me died for a second there, so I say now to all others, be very carefull.

**godfathertwo** · 13th November, 2022, 11:17 AM

That is why i do not take this jobs on these model too risky
As some dangerous bcm have not been discovered yet and Nissan
Does not take any responsability for this
Shame on them .

**turismou** · 13th November, 2022, 05:35 PM

Originally Posted by godfathertwo

That is why i do not take this jobs on these model too risky
As some dangerous bcm have not been discovered yet and Nissan
Does not take any responsability for this
Shame on them .

I think I'm gonna start rejecting those vehicles or tell very high price so that customer goes away. That kind of stress is not worth it.

**p1et** · 14th November, 2022, 06:38 PM

I think this problem have some explanation and for sure there are people who know what is going on we encounter problem with those BCM's. I don't believe it's just bad luck, it must depend on something that they stuck in boot mode / learning mode and it can't be just bad luck. Because when it danger you about BCM serial number, most of the times you will succeed. I fully understand danger when dealing with Renault BCM's, sometimes there is no PIN found in BCM and tools clear card and cannot reprogram. But here it's not the problem during PIN obtaining process, it happen during programming which doesn't make much sense for me.

**turismou** · 17th November, 2022, 07:42 PM

A friend of mine was doing a spare key for Nissan Juke 2015. He attempted to program it with Autel and it failed during the procedure. All symptoms are same like when Qashkai fails, no ignition, no light to cluster, dead car... We tried to find someone to fix this, but no one can do it, last stop will probably be dealer and new BCM to be coded online...
This pretty much confirms that every nissan from 2014~2016 is risky. Even the ones we thought are safe are not safe.

**davorOS** · 17th November, 2022, 08:42 PM

today I had call from local nissan dealer they need to change radio unit on qaskai and procedure need to reprogram key
some how diagnostic stop and kill car on key reprogramming
so it is ~~~~ing car problem and better as sugested to avoid this car and past them to someone else

**p1et** · 17th November, 2022, 09:17 PM

Originally Posted by davorOS

today I had call from local nissan dealer they need to change radio unit on qaskai and procedure need to reprogram key
some how diagnostic stop and kill car on key reprogramming
so it is ~~~~ing car problem and better as sugested to avoid this car and past them to someone else

So what's now? Dealership repair car at his cost or customer must pay for it? It always makes me wonder.

**davorOS** · 17th November, 2022, 09:39 PM

I don't know who will pay the cost I will let you know if they told me
mechanic that work on car ask me to install elv emulator to try get ignition as they can communicate with BCM but not with Engine ecu
will see on monday

**rapidlocksmiths** · 18th November, 2022, 12:32 AM

on qashqai , rogue and xtrail , dealer change bcm , electronic steering lock and 1 other unit on most ive read on that went wrong , if the dealer causes it and car is under warranty still then repaired under warranty , if no longer under warranty customer must pay , in every case ive read about to date when a 3rd party causes it then the dealer has charged for repair despite being a known nissan issue.

**godfathertwo** · 18th November, 2022, 09:26 AM

Shame on Nissan
Known problem and this should be fixed even if out of warranty in America they take action trough court to make big manufacture aware of their faults like accelarator pedal stuck open people killed etc etc.

**Spiritech** · 26th November, 2022, 11:53 AM

Forget the shame on Nissan, forget the banned BCM P/N list.

This is entirely down to the procedure used, not the diagnostics, not the tool, it is entirely down to the procedure.

Look at the previous reports and you'll pretty much always see it's a spare key.

Spare key means the steering lock is probably disengaged because it opens when the door does on most firmwares.

I fully support the use of good quality tools like the Smart Pro or AVDI and if you're not using good tools take a good hard look at yourself and your business model.(Buy a bloody Smart Pro for key jobs boys)

Just ensure the steering lock is LOCKED before making a spare key, some(most) BCMs must see the steering lock retract before learning a new key and if they do not they crash. A crash in these vehicles as common for Nissan vehicles results in a blanked EEPROM area of the processor as they rewrite the entire EEPROM during the key learning including the links to other modules. However given these are the first Renault based UCH/BCM vehicles it is likely that these vehicles did not have proper supporting documentation at dealers. You can use the EEPROM of another vehicle to relearn all immo related functions(all Nissan immo procedures up to 21 include a full relearn, new 21+ Juke etc is different and more Renault than Nissan) in case of a failure as all modules learn from IMMO/BCM/UCH during key learn.

TLDR: Use quality tools, ensure steering is locked before key learn.