Bimmerfest - BMW Forums - View Single Post - Keys: The Full Story.
View Single Post
Old 11-25-2011, 06:49 PM
wgreville wgreville is offline
Registered User
Location: australia
Join Date: Nov 2011
Posts: 2
Mein Auto: bmw 5 series
BMW key fiasco with immobilizer transponder chip

I fully understand the "security" involved with not allowing your car to start if you don't have a special transponder inside your key. HOWEVER, since I own three used BMW's in my family, and the family members seem to lose keys all the time, I am not in the mood to spend a crapload of money with this goofy immobilizer system each time.

A replacement key from the dealer is $900, and from a special locksmith is $490

I can get a blank BMW key for $9 on ebay. I can get it cut from most locksmiths for $29.

Now what do I do to get a new transponder chip? they are roughly 30 cents each on china websites that sell them to the dealers. The programming chip eeprom machine is $2000

IF I COPY THE TRANSPONDER CHIP exactly, how does the EWS know it's a different chip?

Also, the immobilizer system is not a good system to protect your car from being stolen, I strongly suggest you get a real alarm system to satisfy your ability to protect your car from theft. The immobilzer will not sound and alarm when the criminals are plugged into your car's computer creating a new key for it.

Reply With Quote