How do you reset immobilizer bmw e38 740i - BMW Cars & Trucks

The answer is No to both questions. The security system and immobilizer is there to stop exactly what you are trying to do, start the car without the correct credentials. You can't reprogram computers (ECM and BCM) and the security modules and sensors. You have to fix the issue not find away around it. The immobilizer on that vehicle needs a code.

https://www.google.com/search?q=2006+BMW+X5+reset+security

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Hello again Sondra
Simon Atkinson and I both answered your query and we both mention parasitic battery drain. None of us mentioned a 'battery reset' and as far as I am concerned, I have never heard of anything like that. A battery is an inert box of lead and acid that holds a charge that you put into it. The engine control module monitors it and BMW being who they are DO in fact have a BATTERY RESET procedure!!

https://www.google.com/search?q=2006+bmw+330i+battery+reset


Also, if you disconnect the battery for even a short length of time, you will need to reset the security system and immobilizer.

https://www.google.com/search?q=2006+bmw+330i+reset+security+system

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If you take your registration ducument to a BMW dealership they will tell you the code for free, based on the VIN number.

Or look in the Glovebox for a small white sticker, or in the Owner's manual.

But, I found this

BMW hasn't used a "radio code" since the beginning of the e38/e39/e53/e46 generation of BMWs. That technology ended with the anti-theft radios used in BMWs prior to the aforementioned e series.

The code you see appearing on your nav screen or MID (you didn't indicate which radio setup you have)...is an anomaly of the OBC's immobilizing code probably brought on by the low voltage issues you were having. There have been many threads on this topic across multiple BMW forums in that usually a simple use of "0000" or "1234" works to get past the lockout once the battery issue or low voltage issue is fixed...or initiating the emergency deactivation of the CODE found in the owner's manual.

and this confirms it is the immobilizer code

https://www.bimmerforums.com/forum/showthread.php?2270312-radio-code

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door change doesnt affect the immobilizer ---depending on how hard or the extent of damage sounds like theirs more damage else where to wiring -electronics -components

reset using a scanner to reset the immobilizer

use a scan tool to reset the immobilizer

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.

Sounds like your battery is weak. BMW's don behave like other cars when the battery is weak. The BMW will prevent the starter from engaging, but leaves power to the interior.

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

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.