[dr_dirtg]

Hello, I have a uniquely annoying situation and need help answering some questions, I did search but this isnt answered...

Its a 06 m5 , (I know this is e90 forum) I recently got it, keys were missing
I went to dealer ordered new fob and blade, did the simple steps to allow the key and car to "marry" each other, but it didnt and I have a slash thru key symbol on guage cluster.
Simple steps were to put key in and after 5 to 10 sec the cluster should accept the key and then I should be able to start or push for accessory power.

So I went back to dealer they checked the fob and said it did not marry itself with the car, and to bring the car in.... which I want to avoid because they could start a can of worms for which I will be billed.

Is their any advice from members?

Also if I bought a used fob with the mated cas control unit and swapped them into my car would I atleast get acc power so that I could go online with the car snd pair the cas unit to the ecu?

Much appreciation for any tips!

[Dracon]

Originally Posted by dr_dirtg

Hello, I have a uniquely annoying situation and need help answering some questions, I did search but this isnt answered...

Its a 06 m5 , (I know this is e90 forum) I recently got it, keys were missing
I went to dealer ordered new fob and blade, did the simple steps to allow the key and car to "marry" each other, but it didnt and I have a slash thru key symbol on guage cluster.
Simple steps were to put key in and after 5 to 10 sec the cluster should accept the key and then I should be able to start or push for accessory power.

So I went back to dealer they checked the fob and said it did not marry itself with the car, and to bring the car in.... which I want to avoid because they could start a can of worms for which I will be billed.

Is their any advice from members?

Also if I bought a used fob with the mated cas control unit and swapped them into my car would I atleast get acc power so that I could go online with the car snd pair the cas unit to the ecu?

Much appreciation for sny tips!

CAS units don't have a procedure to marry a key to it. The transponder numbers are pre-programmed into the unit. (10 transponders per CAS unit, after 10 keys have been issued the CAS requires replacement.)

It sounds like BMW might have messed up the order on the key. The key should just arrived from BMW to the dealership and just work.

Marrying the keys via a procedure has a feature of the older EWS system. CAS is completely different.

Using a used CAS could be possible, however, if the used CAS has a higher mileage than the vehicle currently does, the CAS mileage will overwrite the KOMBI mileage and it'll be next to impossible to correct to it's true mileage.

[dr_dirtg]

Originally Posted by Dracon

CAS units don't have a procedure to marry a key to it. The transponder numbers are pre-programmed into the unit. (10 transponders per CAS unit, after 10 keys have been issued the CAS requires replacement.)

It sounds like BMW might have messed up the order on the key. The key should just arrived from BMW to the dealership and just work.

Marrying the keys via a procedure has a feature of the older EWS system. CAS is completely different.

Using a used CAS could be possible, however, if the used CAS has a higher mileage than the vehicle currently does, the CAS mileage will overwrite the KOMBI mileage and it'll be next to impossible to correct to it's true mileage.

That is a lot of good information, thank you!
So is there something wrong with my CAS or antenna that it does not see my key?
I ordered a new key with the fob, the key portion works - so perhaps the dealer didn't screw up the order? Perhaps there is something wrong with the car? Is there a way to check if the CAS module is the original one, and that it has not been changed at some point?

I also read somewhere that the m5 can only have 2 keys, but conflicting information says it is only for the comfort access (That it should still fire up the engine) and other information I read said that it woudln't fire up the engine either until the previous keys were disabelled in the CAS?

I have INPA but no other software, Im in the process of getting Rheingold, but I'm not sure if it (or inpa) has capability to enable/disable keys?

Thanks again

[Dracon]

Originally Posted by dr_dirtg

That is a lot of good information, thank you!
So is there something wrong with my CAS or antenna that it does not see my key?
I ordered a new key with the fob, the key portion works - so perhaps the dealer didn't screw up the order? Perhaps there is something wrong with the car? Is there a way to check if the CAS module is the original one, and that it has not been changed at some point?

I also read somewhere that the m5 can only have 2 keys, but conflicting information says it is only for the comfort access (That it should still fire up the engine) and other information I read said that it woudln't fire up the engine either until the previous keys were disabelled in the CAS?

I have INPA but no other software, Im in the process of getting Rheingold, but I'm not sure if it (or inpa) has capability to enable/disable keys?

Thanks again

The two key thing applies to comfort access. (Only two keys at a time can trigger the comfort access system, all other keys act like normal keys.)

You could check the VIN on the CAS to see if it matches the vehicle but even that's not 100% certain without doing some very advanced digging.

Rheingold can enable/disable keys but only the preprogrammed transponders in the CAS. It can't make your key work if the transponder in your key isn't in the eeprom of the CAS.

There's also a function for reading which key number is in the slot on the dash. If it comes back as unknown then your CAS isn't original.

[dr_dirtg]

Originally Posted by Dracon

The two key thing applies to comfort access. (Only two keys at a time can trigger the comfort access system, all other keys act like normal keys.)

You could check the VIN on the CAS to see if it matches the vehicle but even that's not 100% certain without doing some very advanced digging.

Rheingold can enable/disable keys but only the preprogrammed transponders in the CAS. It can't make your key work if the transponder in your key isn't in the eeprom of the CAS.

There's also a function for reading which key number is in the slot on the dash. If it comes back as unknown then your CAS isn't original.

So is there any other program NCSexpert or Inpa or anything that can program the CAS to match the key that bmw sold me?

I dont want to go back to the dealer and they will replace the CAS and give me the bill, if the CAS isn't broken, and I'm thinking they themselves don't have access to programming a CAS?

[Dracon]

Originally Posted by dr_dirtg

So is there any other program NCSexpert or Inpa or anything that can program the CAS to match the key that bmw sold me?

I dont want to go back to the dealer and they will replace the CAS and give me the bill, if the CAS isn't broken, and I'm thinking they themselves don't have access to programming a CAS?

There are tools that can do it. But you're going to spend 5-10k for them. Much cheaper to have the dealer sort it out.

[Sensible_]

What CAS version do you have. Your M5 is an E6X chassis? What is the exact manufacturing date?

You cannot just 'marry' a key to the car as stated. If you want to avoid dealer i suggest you either:

1. Buy used CAS+DME+KEY set and have someone with correct tools program everything so it matches ur car. In fact a like for like set will be a straight plugin in and drive away as CAS AND DME are already synced. However there will be VIN MILEAGE and other mismatches.

2. Buy something like BMW MULTI TOOL and a VIRGIN key and program it yourself. When done just sell the tool on eBay to recoup cost.

[dr_dirtg]

Bmw multi tool would do it? Where can I buy a Virgin key, is this not what bmw sold me?
M5 e60 03/06

[Dracon]

Originally Posted by dr_dirtg

Bmw multi tool would do it? Where can I buy a Virgin key, is this not what bmw sold me?
M5 e60 03/06

No, BMW sold you a programmed key. The key's transponder data is coded to the VIN information you gave BMW and locked.

You could find another tool to unlock the transponder so you can write information to it. But depending on the type of transponder used in the key, this may prove difficult.

Check China auto software vendors for virgin keys and transponders, they usually have them. It's extremely difficult to get real OEM virgin keys and transponders.

Good luck.

[Sensible_]

Originally Posted by dr_dirtg

Bmw multi tool would do it? Where can I buy a Virgin key, is this not what bmw sold me?
M5 e60 03/06

exactly as deacon says...

china virgin keys are usually fine. I have had no problem with them. the plastic feels a bit cheaper but you can just swap it over with a used case from eBay.

essentially you need to get the ISN key from your CAS. BMW MULTI TOOL does this automatically. You could get an eeprom dump from the CAS any other way you like and then buy a cheap HITAG 2 KEY programmer and program the key that way. This will be slightly cheaper.

[wikolipr]

Originally Posted by Dracon

The two key thing applies to comfort access. (Only two keys at a time can trigger the comfort access system, all other keys act like normal keys.)

You could check the VIN on the CAS to see if it matches the vehicle but even that's not 100% certain without doing some very advanced digging.

Rheingold can enable/disable keys but only the preprogrammed transponders in the CAS. It can't make your key work if the transponder in your key isn't in the eeprom of the CAS.

There's also a function for reading which key number is in the slot on the dash. If it comes back as unknown then your CAS isn't original.

I know this is an old thread but I'm looking for some help. My keyfob buttons don't work. It does wake up the car somehow with fuel pump priming and the Start/Stop button illuminate but that is it. Nothing else happens with the buttons. I can start the engine just fine and I am not getting any low battery warnings on the dash.

ISTA-D shows it is Key 3 - Enabled. It's the only key I have. No fault codes on any modules after running the test.

Could it be that it is not programmed on the CAS? Is there a way to check if it is?

I don't have Comfort Access.

[Mashman]

Originally Posted by wikolipr

I know this is an old thread but I'm looking for some help. My keyfob buttons don't work. It does wake up the car somehow with fuel pump priming and the Start/Stop button illuminate but that is it. Nothing else happens with the buttons. I can start the engine just fine and I am not getting any low battery warnings on the dash.

ISTA-D shows it is Key 3 - Enabled. It's the only key I have. No fault codes on any modules after running the test.

Could it be that it is not programmed on the CAS? Is there a way to check if it is?

I don't have Comfort Access.

Your FOB is dead, but the transponder is fine.

Think of it this way, the transponder is the memory and the FOB is the hardware.

The car is starting fine because it is able to read the information off the transponder chip OK. The buttons do not work because there is obviously something wrong with the hardware.

The transponder chip can be removed from your broken FOB and assuming the replacement FOB has the same hardware, resoldered onto another FOB and is should workd fine. You do not need an new/unprogrammed/virgin FOB that is required to add a FOB to the car, your transponder is OK, so you should be able to use any used FOB that works and has the same hardware.

[wikolipr]

Originally Posted by Mashman

Your FOB is dead, but the transponder is fine.

Think of it this way, the transponder is the memory and the FOB is the hardware.

The car is starting fine because it is able to read the information off the transponder chip OK. The buttons do not work because there is obviously something wrong with the hardware.

The transponder chip can be removed from your broken FOB and assuming the replacement FOB has the same hardware, resoldered onto another FOB and is should workd fine. You do not need an new/unprogrammed/virgin FOB that is required to add a FOB to the car, your transponder is OK, so you should be able to use any used FOB that works and has the same hardware.

Thanks! You were right. I sent out the CAS and got two new keys made since I only had that bad one. Plugged it back in and both keys work perfectly. I did learn a bit about troubleshooting the wagon side of the diversity antenna and looking for a broken wire. So pumped. Finally have a fully functioning key! Thanks again man.

[djbmw1]

If anyone wanted to see how to program a virgin key without breaking the piggy bank, using HiTag2 and E/F Scanner (BMW Explorer Clone) is likely the cheapest option, as mentioned above by Sensible_. Here's a 'how to':

[Aus335iguy]

Originally Posted by djbmw1

If anyone wanted to see how to program a virgin key without breaking the piggy bank, using HiTag2 and E/F Scanner (BMW Explorer Clone) is likely the cheapest option, as mentioned above by Sensible_. Here's a 'how to':

I assume the process and equipment is the same for e9x as well as others ?

[ctuna]

I didn't see any mention if it was a standard or comfort access key or
did it miss it. Because if you want comfort access or have it the process is
different. You are only allowed two comfort access keys and the missing ones
must be deprogrammed from the car before you can add another.

http://www.bimmerfest.com/forums/sho...d.php?t=903551

https://www.e90post.com/forums/showthread.php?t=1510527

Follow the Mashman chronicles he has it down.

[djbmw1]

Originally Posted by Aus335iguy

I assume the process and equipment is the same for e9x as well as others ?

That's correct - all E series cars. If you DO end up trying this method, please make sure you purchase the "FULL" version of EF scanner with the latest software (as there are multiple versions with varying software updates).

[djbmw1]

Originally Posted by ctuna

I didn't see any mention if it was a standard or comfort access key or
did it miss it. Because if you want comfort access or have it the process is
different. You are only allowed two comfort access keys and the missing ones
must be deprogrammed from the car before you can add another.

http://www.bimmerfest.com/forums/sho...d.php?t=903551

https://www.e90post.com/forums/showthread.php?t=1510527

Follow the Mashman chronicles he has it down.

The keys themselves are Comfort Access keys. At 10:25 you'll hear where I select the "Keyless Go" option which occupies one of the two Keyless Go slots that you mention. I assume that if I already had two slots consumed for Comfort Access that it would prompt me in some way to remove one of the keys from CA.

[Aus335iguy]

Originally Posted by djbmw1

The keys themselves are Comfort Access keys. At 10:25 you'll hear where I select the "Keyless Go" option which occupies one of the two Keyless Go slots that you mention. I assume that if I already had two slots consumed for Comfort Access that it would prompt me in some way to remove one of the keys from CA.

So at that point you'd need to do that in the CAS.