E90Post
 


The Tire Rack
 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > DIY Key Fob Programming Experiment



Reply
 
Thread Tools Search this Thread
      07-06-2018, 02:43 PM   #23
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
screencast

Here is what a aftermarket key looks like. It doesn't have a water seal or a rechargable battery. Also it has a PCF7941 instead of a PCF7945.
Appreciate 0
      07-06-2018, 08:57 PM   #24
BimmerNugget
Crazy Frog
BimmerNugget's Avatar
United_States
541
Rep
1,209
Posts

Drives: L.L.Bean Bootmobile
Join Date: Jun 2017
Location: 560 State Street

iTrader: (0)

Quote:
Originally Posted by Nickco43 View Post
screencast

Here is what a aftermarket key looks like. It doesn't have a water seal or a rechargable battery. Also it has a PCF7941 instead of a PCF7945.
What's the difference between the 7941 and 7945 chip? My car is Non CA so i have the KR55WK49127 fob. I bought an eBay key and it has the battery door like a CA key. I assume it's also the 7941 chip like yours? Will this work on Non CA key such as my KR55WK49127?
Appreciate 0
      07-06-2018, 09:01 PM   #25
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
Quote:
Originally Posted by BimmerNugget View Post
What's the difference between the 7941 and 7945 chip? My car is Non CA so i have the KR55WK49127 fob. I bought an eBay key and it has the battery door like a CA key. I assume it's also the 7941 chip like yours? Will this work on Non CA key such as my KR55WK49127?
This is a non CA key, probably the same key you bought off eBay. I am not sure what the differences are between the chips. This board looks alot simpler than the OEM key.
Appreciate 1
      07-07-2018, 12:35 PM   #26
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
Monday I am going to a locksmith to have my metal key cut. I also want to get a price on how much they would charge if I needed a full key and how much to program one of my refurbished keys.
Appreciate 0
      07-07-2018, 03:47 PM   #27
Aus335iguy
Colonel
Aus335iguy's Avatar
Australia
650
Rep
2,139
Posts

Drives: 2009 e92 335i MSport DCT
Join Date: Jul 2015
Location: Sydney Aus

iTrader: (0)

Garage List
2009 BMW 335i  [10.00]
In for results
__________________
When you doppelkaplung you doppel your fun.
Appreciate 0
      07-07-2018, 04:06 PM   #28
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
Quote:
Originally Posted by Aus335iguy View Post
In for results


The experiment is now fully in the hands of the China Post.

Last edited by Nickco43; 04-17-2020 at 11:29 AM..
Appreciate 1
      07-09-2018, 11:53 AM   #29
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
Update: In a moment of poor judgment I dropped $800 on the BMW multi tool. This is the safest programmer for our cars. This will allow me to program keys via OBD2 in 10 minutes. My CA key arrived today it has a different chip, PCF7953. Looks like my CA key will be on hold for a bit longer. I went to a locksmith to get a quote on how much it would be to get a new fob if I didn't have a keylab in my basement and he said he couldn't do it. I wanted to also get my metal key cut but he said it was $35. I am not paying a BMW tax so I walked out. I am going to call around to see if someone will do it at the normal $5-$10 rate.


Keys will be made by the end of the week.
Appreciate 0
      07-09-2018, 02:30 PM   #30
BimmerNugget
Crazy Frog
BimmerNugget's Avatar
United_States
541
Rep
1,209
Posts

Drives: L.L.Bean Bootmobile
Join Date: Jun 2017
Location: 560 State Street

iTrader: (0)

Quote:
Originally Posted by Nickco43 View Post
Update: In a moment of poor judgment I dropped $800 on the BMW multi tool. This is the safest programmer for our cars. This will allow me to program keys via OBD2 in 10 minutes. My CA key arrived today it has a different chip, PCF7953. Looks like my CA key will be on hold for a bit longer. I went to a locksmith to get a quote on how much it would be to get a new fob if I didn't have a keylab in my basement and he said he couldn't do it. I wanted to also get my metal key cut but he said it was $35. I am not paying a BMW tax so I walked out. I am going to call around to see if someone will do it at the normal $5-$10 rate.


Keys will be made by the end of the week.
You got a link to the tool?
Appreciate 0
      07-09-2018, 02:40 PM   #31
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
Quote:
Originally Posted by BimmerNugget View Post
You got a link to the tool?
http://www.xhorsetool.com/wholesale/bmw-multi-tool.html

The Hitag2 and R270 will still work and I will make a guide on how to use them but this works through ODB2, removing the possibility of damaging the CAS while soldering.
Appreciate 0
      07-10-2018, 10:53 AM   #32
Mashman
First Lieutenant
117
Rep
342
Posts

Drives: E93
Join Date: Apr 2016
Location: Heaven / TX

iTrader: (0)

Quote:
Originally Posted by Nickco43 View Post
http://www.xhorsetool.com/wholesale/bmw-multi-tool.html

The Hitag2 and R270 will still work and I will make a guide on how to use them but this works through ODB2, removing the possibility of damaging the CAS while soldering.
The Hitag2/R270 approach will only work if the CAS is unencrypted. All CAS3+, and CAS3 with updated firmware will have encrypted portions that Rosfar will not read. Hitag2 software will still update the dump, and everything will appear fine, but after uploading to the CAS, new keys won't work. I know this because this was my first approach to making my own keys.

I've been watching, and am curious, since you have a CAS2, whether or not your approach would work. I think it will for CAS2, because I haven't seen anything about SOPT update for CAS2. I could be wrong, and CAS2 unit's may have also have had updated firmware.

The Multitool should work well. But there is always some risk. I purchased an original FVDI, and used it to program keys for my car. I thought I could subsidize the cost, by leasing it out. But, I quickly realized that it's not all that simple, and there is a real amount of risk involved in using these tools, so I've decided against trying to use it on anyone else's car. I paid a UK locksmith $350 for the tool, and programmed 7 keys for my car(2 CA, 2 Remote, and 3 Emergency), so I figure I got my money out of it.

Also, I'm assuming that the forum you spoke of in the OP, was Digital Kaos? If it's not, the locksmith forum on Digital Kaos is an excellent resource, BUT remember that these are professional locksmiths who make their living being locksmiths. They will help other professional locksmiths, but can take offense of non-locksmiths taking money away from locksmiths. So, I always made a point that I had tried to find a local locksmith to help, but couldn't find one, whenever I posted there.
__________________
I keep getting robbed because I leave the front door open..

I could close it but I feel doing so would be a victory for the thieves....
Appreciate 0
      07-11-2018, 09:29 AM   #33
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
Quote:
Originally Posted by Mashman View Post
The Hitag2/R270 approach will only work if the CAS is unencrypted. All CAS3+, and CAS3 with updated firmware will have encrypted portions that Rosfar will not read. Hitag2 software will still update the dump, and everything will appear fine, but after uploading to the CAS, new keys won't work. I know this because this was my first approach to making my own keys.

I've been watching, and am curious, since you have a CAS2, whether or not your approach would work. I think it will for CAS2, because I haven't seen anything about SOPT update for CAS2. I could be wrong, and CAS2 unit's may have also have had updated firmware.

The Multitool should work well. But there is always some risk. I purchased an original FVDI, and used it to program keys for my car. I thought I could subsidize the cost, by leasing it out. But, I quickly realized that it's not all that simple, and there is a real amount of risk involved in using these tools, so I've decided against trying to use it on anyone else's car. I paid a UK locksmith $350 for the tool, and programmed 7 keys for my car(2 CA, 2 Remote, and 3 Emergency), so I figure I got my money out of it.

Also, I'm assuming that the forum you spoke of in the OP, was Digital Kaos? If it's not, the locksmith forum on Digital Kaos is an excellent resource, BUT remember that these are professional locksmiths who make their living being locksmiths. They will help other professional locksmiths, but can take offense of non-locksmiths taking money away from locksmiths. So, I always made a point that I had tried to find a local locksmith to help, but couldn't find one, whenever I posted there.
That is 100% my fear. All of these tools are playing with fire and I will not program any cars other than my own. CAS 2/3 and unencrypted. Early CAS 3+ is but latter CAS3+ and CAS 4 are encrypted. The people on Digital Kaos are a bit hard to deal with. I found that just searching around the forum is more useful. Locksmiths do have a good racket going on with these car keys. They are making at least $150 of profit for 15 minutes of work.

A forum member is sending me his water damaged key. I am transplanting the chip onto a used blank key. As long as the PCF7945 did not get damaged it should work the same.

The BMW multitool comes Friday and the R270 comes Saturday. I think I am just going to resell the R270 and the Hitag.

Last edited by Nickco43; 07-11-2018 at 09:55 AM..
Appreciate 1
      07-12-2018, 10:56 AM   #34
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
My R270 showed up:


I don't really have a use for this now except if I wanted wipe a M3 cluster.

The BMW multi tool comes tomorrow and then I can program my aftermarket key.
Appreciate 1
      07-12-2018, 02:07 PM   #35
3srsntswngr
Private
5
Rep
60
Posts

Drives: 08 beige 328xi
Join Date: Sep 2017
Location: WV

iTrader: (0)

Holy shit this thread.
Appreciate 0
      07-13-2018, 10:51 AM   #36
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
Good and bad news. I programmed the aftermarket key and it starts the car but it will not unlock the doors. I am not sure what is wrong.
Appreciate 1
      07-13-2018, 11:50 AM   #37
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]


A quick fix with the soldering iron. Everything works! Remote, memory, everything.

Last edited by Nickco43; 07-13-2018 at 12:30 PM..
Appreciate 3
feuer4274.50
e90yyc2424.00
      07-13-2018, 12:12 PM   #38
King Rudi
Lieutenant Colonel
King Rudi's Avatar
13152
Rep
1,965
Posts

Drives: Meat Suit
Join Date: Sep 2017
Location: Planet Earth

iTrader: (0)

My level of being impressed here is off the charts.
Appreciate 0
      07-13-2018, 12:20 PM   #39
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
Quote:
Originally Posted by Not_Judy View Post
My level of being impressed here is off the charts.
I am not done yet. Once I get the HiTag tool I can see if I can fix 3srsntswngr's water damaged key.

My PO lost one of my CA keys so I bought a used CA key and I have a new CA key chip on order. Then I can clone key 2. I believe I would be the first person to have a working CA non dealer key.
Appreciate 1
      07-13-2018, 10:08 PM   #40
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
There is a e60 at the junkyard. I am going to pull the cas module and start the $100 key programming diy with the R270 and the Hitag2.
Appreciate 1
      07-14-2018, 01:55 AM   #41
335NJ
Colonel
United_States
533
Rep
2,872
Posts

Drives: 2008 335i 6MT E90
Join Date: Feb 2014
Location: NJ/Philadelphia Suburbs

iTrader: (1)

Quote:
Originally Posted by Nickco43 View Post
Update: In a moment of poor judgment I dropped $800 on the BMW multi tool. This is the safest programmer for our cars. This will allow me to program keys via OBD2 in 10 minutes. My CA key arrived today it has a different chip, PCF7953. Looks like my CA key will be on hold for a bit longer. I went to a locksmith to get a quote on how much it would be to get a new fob if I didn't have a keylab in my basement and he said he couldn't do it. I wanted to also get my metal key cut but he said it was $35. I am not paying a BMW tax so I walked out. I am going to call around to see if someone will do it at the normal $5-$10 rate.


Keys will be made by the end of the week.
LOL. "BMW tax"? Most of the machines used to cut the high-security milling cost $8k+. Plus all of the other factors that are piled into the $30-35 shops charge to cut these keys. The cutter itself is good for 100 keys, and costs over $200.
__________________
BSM E90 6MT-JB4 G5 ISO-BMS DCI-Golf-Tee Mod-Hankook S1N2 Non-RFT-ER Chargepipe/TiAL BOV-E40 blend-VRSF V2's-M3 CDV-MHD/JB4 FLASH-VRSF 5" STEPPED FMIC
Appreciate 0
      07-14-2018, 05:36 AM   #42
RU54HEL
Enlisted Member
1
Rep
44
Posts

Drives: 320ed
Join Date: Aug 2015
Location: bristol

iTrader: (0)

Great thread dude wish you were a little closer to me
Appreciate 0
      07-14-2018, 10:30 AM   #43
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]


$15 at the junkyard. I am going to verify that the R270 works.
Appreciate 0
      07-14-2018, 01:41 PM   #44
Nickco43
Lieutenant Colonel
Nickco43's Avatar
1456
Rep
1,909
Posts

Drives: 08 E92 BMW M3
Join Date: Apr 2018
Location: Denver, CO

iTrader: (1)

Garage List
2008 BMW  [0.00]
Mashman

url=https://postimg.cc/image/yt9jw91e9/][/url]

I am having difficulty using the R270. I am going to some trouble shooting before I throw in the towel. I hope I can get it working since that would be a really affordable way for people to make new keys for their car.

I ordered CA key chips and will be making one more key before I sell the BMW multi tool. I was thinking of renting the tool out but I am not sure on how to protect myself from someone bricking their CAS.

Update: As of 1AM I have not been able to get the R270 to work with the CAS3+. I am not sure if it is user error, drivers or the programmer is defective. If someone on DK knows what is wrong I will try and see if it will work but as of now it is not necessary to continue with experiment. The Hitag and the new batteries have cleared US customs are should be here in a few days. I have yet to determine if soldering blank chips to a used key will allow it to be programmed. If it works I will have three, blank OEM non CA keys that I will sell with the BMW Multi Tool. The DIY for the multi tool is released in the DIY section of the forum. If you are like my neighbors and own five white X3's then I would not hesitate to drop $800 on the multi tool and save thousands instead of going to the dealer. If you just need a lost key replaced find a locksmith who specializes in making BMW keys. Most locksmith's won't even touch our cars. Hell I can't even get a damn metal key cut.

Last edited by Nickco43; 07-15-2018 at 12:05 AM..
Appreciate 0
Reply

Bookmarks

Tags
diy, keyfob, programming

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 03:04 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST