F30POST
F30POST
2012-2015 BMW 3-Series and 4-Series Forum
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F30 Sedan / F32 Coupe / F36 Gran Coupe Forum > My key won't work! Help please
proTUNING Freaks
Post Reply
 
Thread Tools Search this Thread
      06-05-2020, 01:38 PM   #1
Makavelif32
Enlisted Member
Makavelif32's Avatar
No_Country
45
Rep
31
Posts

Drives: BMW 435i
Join Date: May 2020
Location: Da7ye

iTrader: (0)

My key won't work! Help please

Hey guys so I have a 435i and my key won't work. I changed battery twice. Still didn't work. Checked and replaced damaged fuses, still nothing. I even got my key checked to see if it's working and it's 100% functional. I was told that it could be the module but most likely the antenna that is in the back of the car. I know if I replace it it'll need to be coded but I can't seem to find the part or the part number anywhere. Any help would be greatly appreciated! Thanks so much
Attached Images
 
Appreciate 0
      06-05-2020, 01:44 PM   #2
2000Z3M
Captain
639
Rep
847
Posts

Drives: 2016 435i ZHP
Join Date: Dec 2008
Location: IL

iTrader: (0)

i seen this on book of faces, lol. did you try your second key?
Appreciate 0
      06-05-2020, 01:51 PM   #3
Makavelif32
Enlisted Member
Makavelif32's Avatar
No_Country
45
Rep
31
Posts

Drives: BMW 435i
Join Date: May 2020
Location: Da7ye

iTrader: (0)

Quote:
Originally Posted by 2000Z3M View Post
i seen this on book of faces, lol. did you try your second key?
Don't have an extra key 😭
Appreciate 0
      06-05-2020, 02:02 PM   #4
Qsilver7
Major General
Qsilver7's Avatar
United_States
4343
Rep
7,361
Posts

Drives: F06 650ix GC / F15 X5 50i
Join Date: Oct 2016
Location: Indiana, USA

iTrader: (0)

Which aspect of the key isn't working? The remote fob performs multiple operations that are kind of separate/independent of each other:
  1. Starting?
  2. Central locking/unlocking?
  3. Alarm siren system arming/disarming?
__________________
2015 F06 650ix Gran Coupe`(Moonstone/Cohiba Brown)| 2014 F15 X5 50i MSport (Space Gray/Mocha)

Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.
Appreciate 0
      06-05-2020, 02:19 PM   #5
whatevs
First Lieutenant
137
Rep
359
Posts

Drives: 2016 bmw 328
Join Date: May 2019
Location: MA

iTrader: (0)

Cant help you with the key issue, but have to compliment your amazing ride! Your car Sir, is a real beauty, especially the yellow!!!!
Appreciate 0
      06-05-2020, 02:26 PM   #6
cfm56d7b
Lieutenant General
United_States
5854
Rep
10,232
Posts

Drives: 2017 440i Gran Coupe & 2015 X5
Join Date: Nov 2012
Location: Orange County, CA

iTrader: (2)

I suggest to check for any stored codes as a the first step.
Appreciate 0
      06-05-2020, 02:28 PM   #7
Makavelif32
Enlisted Member
Makavelif32's Avatar
No_Country
45
Rep
31
Posts

Drives: BMW 435i
Join Date: May 2020
Location: Da7ye

iTrader: (0)

Quote:
Originally Posted by Qsilver7 View Post
Which aspect of the key isn't working? The remote fob performs multiple operations that are kind of separate/independent of each other:
  1. Starting?
  2. Central locking/unlocking?
  3. Alarm siren system arming/disarming?
So it won't unlock or lock or start the car. I'd have to remove the metal piece to unlock and lock the car and put the key up to the steering wheel for it to turn on and it's getting so annoying 😭
Appreciate 0
      06-05-2020, 02:29 PM   #8
Makavelif32
Enlisted Member
Makavelif32's Avatar
No_Country
45
Rep
31
Posts

Drives: BMW 435i
Join Date: May 2020
Location: Da7ye

iTrader: (0)

Quote:
Originally Posted by whatevs View Post
Cant help you with the key issue, but have to compliment your amazing ride! Your car Sir, is a real beauty, especially the yellow!!!!
Thank you brother 🙌🏼
Appreciate 0
      06-05-2020, 03:56 PM   #9
Qsilver7
Major General
Qsilver7's Avatar
United_States
4343
Rep
7,361
Posts

Drives: F06 650ix GC / F15 X5 50i
Join Date: Oct 2016
Location: Indiana, USA

iTrader: (0)

Quote:
Originally Posted by Makavelif32 View Post
So it won't unlock or lock or start the car. I'd have to remove the metal piece to unlock and lock the car and put the key up to the steering wheel for it to turn on and it's getting so annoying ��
I apologize if you've already done the next suggestion...but we don't know what you've already done so as to rule it out. But recently on another forum...the owner replaced the battery in his remote fob twice (just like you) and figured out that there was a sticker that needed to be peeled off on the backside of the battery. That peel off sticker was preventing the new batteries from working.

Just an FYI (for those that don't know)...the battery is used to power the remote for locking/unlocking & arming/disarming the car. For starting the car...the remote is self powered through induction. There's a ring antenna behind that little icon on the steering column that powers up the transponder chip inside the remote that allows the remote to communicate with the CAS/BDC/ECU/DME control modules which need to share the encrypted individual serial number (ISN) assigned specifically to your car. If that ISN doesn't match in all components the car won't start. So even with a dead battery inside the remote...you should still be able to start the car by holding the remote next to the little icon on the steering column. That's why it was asked as to what feature of the remote wasn't working.
__________________
2015 F06 650ix Gran Coupe`(Moonstone/Cohiba Brown)| 2014 F15 X5 50i MSport (Space Gray/Mocha)

Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.

Last edited by Qsilver7; 06-05-2020 at 04:02 PM..
Appreciate 4
      06-06-2020, 12:07 AM   #10
Makavelif32
Enlisted Member
Makavelif32's Avatar
No_Country
45
Rep
31
Posts

Drives: BMW 435i
Join Date: May 2020
Location: Da7ye

iTrader: (0)

Quote:
Originally Posted by Qsilver7 View Post
Quote:
Originally Posted by Makavelif32 View Post
So it won't unlock or lock or start the car. I'd have to remove the metal piece to unlock and lock the car and put the key up to the steering wheel for it to turn on and it's getting so annoying ��
I apologize if you've already done the next suggestion...but we don't know what you've already done so as to rule it out. But recently on another forum...the owner replaced the battery in his remote fob twice (just like you) and figured out that there was a sticker that needed to be peeled off on the backside of the battery. That peel off sticker was preventing the new batteries from working.

Just an FYI (for those that don't know)...the battery is used to power the remote for locking/unlocking & arming/disarming the car. For starting the car...the remote is self powered through induction. There's a ring antenna behind that little icon on the steering column that powers up the transponder chip inside the remote that allows the remote to communicate with the CAS/BDC/ECU/DME control modules which need to share the encrypted individual serial number (ISN) assigned specifically to your car. If that ISN doesn't match in all components the car won't start. So even with a dead battery inside the remote...you should still be able to start the car by holding the remote next to the little icon on the steering column. That's why it was asked as to what feature of the remote wasn't working.
Did not know that. Thanks for The info bro
Appreciate 0
      06-06-2020, 08:43 AM   #11
bimmer456
Major General
2940
Rep
5,983
Posts

Drives: 340i
Join Date: Nov 2016
Location: Pasadena, CA

iTrader: (0)

If the car is under warranty I would bring it to the dealer. But looks like holding it to the steering column works so it's not receiving power from the battery as stated. Are you sure the 2nd battery you used wasn't DOA? Sometimes these Amazon batteries are garbage.
Appreciate 0
      06-06-2020, 03:49 PM   #12
EBS0712
BMW CCA #257
74
Rep
184
Posts

Drives: 2014 F31 Wagon / 2020 G20
Join Date: Nov 2013
Location: Utah

iTrader: (0)

I had a problem with the remote and replaced the battery and it still did not work. I solved the problem by cleaning the contacts in the remote (inside the remote and on the cover) with alcohol. The remote picks up moisture in your pocket and deposits can attach to the contacts. Problem solved.
__________________
2014 F31 328 xDrive Touring
2020 G20 330 xDrive Sedan
2023 G01 X3 xDrive
BMW CCA # 257
Appreciate 0
Post Reply

Bookmarks

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 08:51 AM.




f30post
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