BMW E92 Car Key

[Reventon]

May i know how much is the cost of replacing a new key ? My key was lost and i only left 1 key , any idea how much it cost?Another thing is i can ask BMW to disable the key which has lost so it cant be used to start my car , but problem is my door lock is still vulnerable to the key. Is it advisable to change the whole lock as well but it may cost more for sure. :dontknow:

 

[jarance]

May i know how much is the cost of replacing a new key ? My key was lost and i only left 1 key , any idea how much it cost?

Another thing is i can ask BMW to disable the key which has lost so it cant be used to start my car , but problem is my door lock is still vulnerable to the key. Is it advisable to change the whole lock as well but it may cost more for sure.
:dontknow:

1. If you want to change the lock you will need to change the lock at the driver and rear boot. In addition, you will also have to buy 2 brand new keys and reprogram it.

2. or you can deregister the key that is missing but you cannot stop a person from opening your car manually. Dont worry about that cos the alarm will be triggered.

 

[Schwepps]

It's so easy to lose a key fob and can happen to anyone. Jarance, how do they deregister the missing key fob without also deregistering the existing key fob?

BTW, E90s don't come equipped with alarms.

 

[astroboy]

It's so easy to lose a key fob and can happen to anyone....

Base on the above statement, I can conclude that you have the qualities of a good father and I can bet my last sen on you that your children are well brought up, plenty of self confidence and will be very successful.

I can't forgive myself for even losing my wallet despite not much of a value but a bucket load of hassle. Our FOB cost more than RM1k to get it replaced !! So replacing 2 FOBs is RM2k plus the lock, all in should kao tim with less than RM5k la.. :wink:

I wish I can tell this to my kids "Son, its easy to get 30 marks in your exams and can happen to anyone.." .. instead, "Bring out the rotan!"..

Actually what I told my son was "How can it be possible to get 30 marks with multiple choice questions? You toss coin also can get 50% probabilities what, I think we should go to the tokong.. long time never go and pay respect to all the mighty ones there.."

 

[jarance]

It's so easy to lose a key fob and can happen to anyone. Jarance, how do they deregister the missing key fob without also deregistering the existing key fob?

BTW, E90s don't come equipped with alarms.

Done at the Service Centre.

Some info extract from WDS fro EWS Module for E90.

System functions
The following system functions are described for the EWS:

Control of the electrical steering interlock

Start enable


Control of the electrical steering interlock
During the unlocking procedure, an authentication procedure is run between the Car Access System (CAS) and the electrical steering interlock. The electrical steering interlock may only commence unlocking after a positive result in the authentication procedure. For safety reasons, the electrical steering interlock is not supplied with current while the vehicle is being driven. The electrical steering interlock is only supplied with voltage for the unlocking procedure or locking procedure.


Start enable
If the identification data is correct, the CAS control unit activates the starter motor via a relay in the control unit. At the same time, the CAS control unit sends the DME control unit a coded release signal for the engine start. The DME control unit only enables the engine start if a correct enable signal is received from the CAS control unit.

After inserting the ignition key in the ignition lock or the remote control in the insertion slot, the following sequence begins:

The transponder in the ignition key or in the remote control is supplied with energy via the ring antenna and sends the key data to the EWS or CAS control unit.

The EWS or CAS control unit checks the correctness of the key data and only then enables activation of the starter by the DME/DDE.

The DME/DDE uses a random number and the secret code to calculate a request. The DME/DDE sends this request via the CAN data line (PT-CAN and K-CAN) and the K bus (also called CAS bus) to the CAS control unit.

The CAS control unit uses the request and the secret code to calculate the response. The response is sent by the CAS via the CAN data line (PT-CAN and K-CAN) and the K bus (also called CAS bus) to the DME/DDE.

The DME/DDE itself also calculates the response that the CAS control unit expects. The DME/DDE then checks the response received from the CAS control unit to ensure it matches the response it has calculated itself.
If the responses match, the engine start is enabled.

Identical changing codes are stored in the control units; their value changes after every starting operation. The changing code is formed from a random number and the secret code.



Notes for Service department
General information

Adjustment of engine management system with electronic immobiliser

With the introduction of the new EWS (4th generation), the adjustment between the engine control unit and electronic immobiliser is no longer required.

6-cylinder petrol engines
The elimination of the adjustment takes effect with the engine control units MSV80 and MSD80 as of 06/2006.

Diesel engines
Elimination of the adjustment takes effect with the engine control units DDE7 as of 03/2007.

M-GmbH engines
The elimination of the adjustment takes effect with engine control unit MSS60 as of 06/2007.

From this point onwards, certain control units can only be replaced with control units specifically ordered for each vehicle.


Note! Procedure in the event of a defective control unit!

If the CAS, EWS (only E83) or DME / DDE is defective, a certain procedure must be followed.
The required control unit must be ordered exactly for the vehicle. This requires the vehicle data (vehicle identification number).
An EWS adjustment is not necessary after renewing the control unit.

> E70
When replacing the Electronic Gearbox Control, an adjustment is necessary. During adjustment, the CAS control unit transfers an individual code to the EGS control unit. This individual code is required for the authentication procedure to enable the gearbox function.

Important

A trial replacement of the control units with secret code is not possible!


Spare key
Spare keys can only be obtained through a BMW dealer with BMW Parts Service. There, one of the 6 spare keys is programmed to match the vehicle. This key is not a copy of the lost key, but rather a new key.

A total of no more than 6 spare keys that match the fitted EWS control unit can be manufactured and delivered.

If a new key is inserted for the first time in the ignition lock, there is a noticeable start delay of 1 to 2 seconds. Thereafter, the starting operation must be without any delay.

Lost keys must be blocked via the diagnosis. Refer to ”Special features of the diagnosis program”.

CAUTION!

Every request for a key is documented so that enquiries from insurance companies and authorities can be followed up.

Reprocurement after loss of all remote controls or ignition keys
If all remote controls or ignition keys are lost, a new EWS or CAS control unit is required.

Service functions
Blocking / releasing remote controls or ignition keys
It is possible to electronically block or release individual remote controls or ignition keys via the diagnosis (service functions).

Important

Electronically blocked means that both the starter and the engine control unit are not enabled for a start. It must be borne in mind that an electronically blocked ignition key still fits mechanically, i.e. all flaps and door can still be opened.

Display of the remote controls or ignition keys used in this vehicle
Here, it is displayed whether each individual ignition key (remote control) managed by the EWS or CAS control unit has already been detected at least once by the EWS or CAS control unit, i.e. it is possible even in the case of older vehicles to recognise how many remote controls or ignition keys have already been used in this vehicle.

 

[Schwepps]

Base on the above statement, I can conclude that you have the qualities of a good father and I can bet my last sen on you that your children are well brought up, plenty of self confidence and will be very successful.

Huh? Wha??

 

[Schwepps]

Done at the Service Centre.

Some info extract from WDS fro EWS Module for E90.....

Double huh?? Simple england pls la!

 

[astroboy]

Double huh?? Simple england pls la!

Few salient points in Jarance's posting with regards to the thread's enquiry,

"Spare keys can only be obtained through a BMW dealer with BMW Parts Service. There, one of the 6 spare keys is programmed to match the vehicle. This key is not a copy of the lost key, but rather a new key.

A total of no more than 6 spare keys that match the fitted EWS control unit can be manufactured and delivered."


"Lost keys must be blocked via the diagnosis."

"If all remote controls or ignition keys are lost, a new EWS or CAS control unit is required." All here means all the 6 spares..

"It is possible to electronically block or release individual remote controls or ignition keys via the diagnosis ."

"Electronically blocked means that both the starter and the engine control unit are not enabled for a start. It must be borne in mind that an electronically blocked ignition key still fits mechanically, i.e. all flaps and door can still be opened."

Worried of this though,

"For safety reasons, the electrical steering interlock is not supplied with current while the vehicle is being driven. The electrical steering interlock is only supplied with voltage for the unlocking procedure or locking procedure."

If this thing screw up, you steering will lock while driving!!

 

[jarance]

Double huh?? Simple england pls la!

Simple english.. Go back to BMW Authorised Dealer and ask them to do it for you. :listen:

 

[Schwepps]

Simple english.. Go back to BMW Authorised Dealer and ask them to do it for you. :listen:

Thanks jarance, much useful information here :top:

 

[Schwepps]

Actually what I told my son was "How can it be possible to get 30 marks with multiple choice questions? You toss coin also can get 50% probabilities what, I think we should go to the tokong.. long time never go and pay respect to all the mighty ones there.."

Very bz today, so here's a parenting tip a bit late, astro. Always think glass half full rather than half empty. I would have told said son: "Waaaaa! Multiple choice means 5 answers to choose from, right? So at 30 marks, you beat the odds by 50%! Awesome dude!! Come we go Genting this weekend, don't tell mum."

 

[jarance]

Thanks jarance, much useful information here :top:

Just found this in the WDS.. It look like the E90 EWS have a password enable that have 128 bit encryption. Look like E90 owners have no choice except to get BMW to do it. :love:

You need to break the password that is 12 character long or 1 trillion combination.

Electronic vehicle immobilisation

The electronic immobiliser (EWS) is both an anti-theft device and start release.

The 4th generation EWS is an enhancement of the EWS used to date. This enhancement uses a new and modern encryption method.

Each vehicle is assigned a 128-bit secret code. This secret code is stored in a BMW database. This means that the secret code is only known to BMW.

 

[astroboy]

Very bz today, so here's a parenting tip a bit late, astro. Always think glass half full rather than half empty. I would have told said son: "Waaaaa! Multiple choice means 5 answers to choose from, right? So at 30 marks, you beat the odds by 50%! Awesome dude!! Come we go Genting this weekend, don't tell mum."

I knew it! :top:

 

[astroboy]

Look at it this way..

The EWS handles the engine start while the CAS handles the door looks, steering lock and stuff.

Before engine is allowed to start, EWS will ask CAS some questions and CAS will answer them. If the answer matches EWS's expectation, then only engine start is allowed and every time, the question changes. Today EWS will ask "What is your favorite cartoon character?", tomorrow EWS will ask "What is your favorite color?"..

So when replacing the system means both EWS and CAS must be replaced together or else CAS will keep telling the wrong answer, and EWS refuses to issue green light to start the car.

Interesting!

 

[Juan Powerblow]

Few salient points in Jarance's posting with regards to the thread's enquiry,

"Spare keys can only be obtained through a BMW dealer with BMW Parts Service. There, one of the 6 spare keys is programmed to match the vehicle. This key is not a copy of the lost key, but rather a new key.

A total of no more than 6 spare keys that match the fitted EWS control unit can be manufactured and delivered."


"Lost keys must be blocked via the diagnosis."

"If all remote controls or ignition keys are lost, a new EWS or CAS control unit is required." All here means all the 6 spares..

"It is possible to electronically block or release individual remote controls or ignition keys via the diagnosis ."

"Electronically blocked means that both the starter and the engine control unit are not enabled for a start. It must be borne in mind that an electronically blocked ignition key still fits mechanically, i.e. all flaps and door can still be opened."

Worried of this though,

"For safety reasons, the electrical steering interlock is not supplied with current while the vehicle is being driven. The electrical steering interlock is only supplied with voltage for the unlocking procedure or locking procedure."

If this thing screw up, you steering will lock while driving!!

Actually, it happened to my biz partner's E60. The engine will just die and key error indicator will be displayed.

 

[karkeez]

here can get new key www.karkeez.com at cheras autocity there (opposite leisuremall)