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Motor was changed and i dont think computer was set to engine. will not start.


the ecm may need resetting as the battery was disconnected
use a scan to to reset it and then the immobilizer may operate properly
make sure that all wiring harness connections are right and properly connected

Sep 13, 2015 | 1999 BMW 323i

1 Answer

Bypass bmw antitheft system


There is no easy way to bypass the immobilizer on this car without switching to a red label ecu and cutting wires OR having your ecu reprogrammed without the immobilizer. A better question is why are you doing this? If you are switching ECUs, you can usually have a new EWS module programmed for $75-100.

If you have had the dreaded spinning key and are planning on switching columns, you can usually drill and pin/screw the tumbler in less than 30 minutes and avoid the hassle all together. The other option is to swap key/module/immobilizer module all at once.

If you have already swapped the column, keep your old key and decoder ring, tape them together, and stick them up under the plastic of your new column - problem solved.

As you can see, the answer starts with a different question - what are you trying to accomplish.

Good luck!
-Scott
www.europartsplus.com

Aug 08, 2014 | BMW 318 Cars & Trucks

1 Answer

Error code 2f44 bmw won't start tried to clear but comes back after every crank


Fault code: 2F44 EWS preventing manipulation.
This is a common fault code flagged by BMW vehicles when the EWS (also known as the CAS module or immobilizer) no longer communicates with the DME.
Some of the most common causes, for this condition, is battery failure or ignition key failure.
Many times, a customer will bring a BMW into the shop or have it towed into the shop, and explain that "the car just won't start, suddenly". Upon further investigation, it is common for a technician to find poor battery condition or a failed ignition key.
In the case of poor (low) battery condition. A low voltage level has caused the immobilizer (CAS/ EWS) to lose its alignment with the DME.
In the case of a failed key, the immobilizer (CAS/EWS) cannot "see" the key in the ignition and therefore will not allow the vehicle to start. This is the "no crank" part of this fault.
So where do we start?
Using a factory level scanner, connect to the vehicle. After identifying the vehicle, proceed to the immobilizer module (CAS/EWS) and investigate if the key can be identified. If the key in the ignition slot cannot be identified and the key slot/ receiver is functioning correctly, then the key must be replaced. Typically, at this point, the first thing we want to do is ask the customer if another valid key is available. If so, let's try this first! If not available, a NEW key FROM THE DEALER, must be purchased.
NOTE: Aftermarket keys will not work i.e. E bay etc. The keys for these cars are VIN specific and need to be supplied by the dealer only!
A new key will work "right out of the box" from a dealer. Simply put it in the ignition, allow the vehicle to identify it (give it about ten seconds) and try a startup.
After replacing the key and regaining key identification the immobilizer (CAS/EWS) must be aligned with the DME.
Using a factory level scanner, perform the DME to CAS/EWS immobilizer alignment procedure. Clear fault code(s).
So, what about the battery?
All the above information is based on having strong battery voltage. In regards to BMW vehicles, 11.0 volts is NOT good voltage. These vehicles are designed to operate in the 12.4 to 13.0 (average) voltage area.
Before attempting to start the engine, a technician should perform a battery load test. When working with BMW vehicles, if the battery is marginal or too old (more than three years old) replace it.
NOTE: New batteries for later model BMWs (CIP vehicles from approx. 2004) will need to be registered. With a dealer level scanner, a tech can perform this function.
Note: As time passes BMW will change the way immobilizers are aligned. Typically, this happens when BMW changes manufacturers. If performing a standard CAS /DME alignment does not work, A later procedure is available. With late model (EWS 3 type onward) immobilizers, the tech must perform a three-step procedure. Using a dealer level scanner, carry out 1) CAS reset, 2)steering lock counter reset 3) reset the starter interlock.

May 04, 2014 | Cars & Trucks

1 Answer

How do i reset a 1997 bmw 7 series immobilizer


these cars are very complex--buy a haynes manual for troublshootn--du a scan that runs a data stream and never ever bringit to a dealer

Nov 21, 2011 | 1997 BMW 7 Series

1 Answer

Have bmw 523 auto will not start,turns over,have charged battery,do i need to reset immobiliser?help,this car cannot be towed i am told because its an auto?


You shouldn't have to reset immobilizer. And your car CAN be towed, if done correctly. It can be towed from the rear. The preferable way is aboard a flat bed.

Jan 04, 2011 | 2009 BMW 5 Series

3 Answers

I have a 95 318i bmw and just remove the key ignition. Anti Theft system won't let it start. Is there any way to reset with out taking to dealer?


YOU HAVE TO PUT NEW KEY IN THE NEW SWITCH.WAIT10 SECONDS TURN KEY ON AND OFF ON AND OFF.WAIT 10 SECONDS.THEN TURN ON AND OFF.FEW MORE TIMES. WAIT UNTIL IMMOBILIZER LEARN NEW KEY AND NEW SWITCH.IF THIS DONT WORK GARAGE HAS TO USE SCAN TOOL REPROGRAM THE NEW KEY AND SWITCH.

May 13, 2010 | 1996 BMW 318

1 Answer

Is there an after market alarm system for mt 2005 bmw X3 that will work with my key's built in remote?


All bmw x3 have immobilizer and alarm system.
To check,lock car with remote
Unlock with key and open door alarm should activate
To stop alarm, shut door press remote.


Nov 07, 2009 | 2005 BMW 3 Series

2 Answers

Bmw e36 immobilised, iginition lights come on, but the starter wont turn over. how do i start the car to get it to a garage, i dont wont to pay the £70 for recovery truck


BMW E36 immobilizer Hope the following will help. Had similar problems. The transmitter buttons on keys is for central locking and alarm. Inside the key at the front there is a small electronic/magnetic chip that looks like a block. About 8mm long, 2mm deep and 4mm wide, not connected to any pc board. This is the immobilizer. It must match the receiver that is located behind the ignition switch. If it is loose and too far away from the receiver it won?t deactivate it. If you made a spare key it will switch on electrics but won?t start the car. If you don?t have an immobilizer chip any alarm shop will be able to program a new chip or install a new pair for your keys. There is a way to disable the immobilizer but rather have it fix and protect your car. I read an article somewhere (perhaps bmw e36 blog) of people removing this immobilizer. Good luck

Jul 06, 2009 | 1997 BMW 328

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