Strange stuff electrical
#11
New Members
Join Date: Dec 2012
Location: Ontario California
Posts: 447
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2005 545
The gremlins were on Tuesday. Didn't happen on Wednesday. Replaced battery anyway b/c it's 3.5 yrs old.
So now no gremlins, but have passenger seatbelt restraint msg. Says keep belt on and drive to dealer.
I'm going to be sort of annoyed if it's the BST. Battery was replaced by a good local Indy so if they broke it I sure hope they'll replace it.
Is it possible it tripped when I simultaneously turned off car & released my belt? That's when it lit up.
So now no gremlins, but have passenger seatbelt restraint msg. Says keep belt on and drive to dealer.
I'm going to be sort of annoyed if it's the BST. Battery was replaced by a good local Indy so if they broke it I sure hope they'll replace it.
Is it possible it tripped when I simultaneously turned off car & released my belt? That's when it lit up.
#12
New Members
Thread Starter
Join Date: Aug 2014
Location: Las Vegas
Posts: 108
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: '04 545i
I've done that many times and never threw a seat belt error .. I just think it's apparent that they installed the battery and you got the fault right after . 1 + 1 = 2 here .. To me it's not a coincidence .. Because they had to disconnect the positive cable and last one to touch it .. Maybe I'm wrong here ,, but it sure looks that way . Get the codes and you'll know for sure . Try and reset the error and hopefully it will clear ..
Thoughts?
#13
New Members
Join Date: Dec 2012
Location: Ontario California
Posts: 447
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2005 545
. A failing IBS can drain the battery and can cause a no crank issue ,, even if the battery is charged . If the no start issue continues after ensuring battery and alternator are good ., it would be the next suspect .. Did u have the alternator checked after the installation of the new battery ? You have to rule these two out first .. Also the BST connects to the positive and IBS connects to the negative terminals , and are two separate cables with different duties ..
Last edited by H F; 09-06-2014 at 08:31 AM.
#14
New Members
Thread Starter
Join Date: Aug 2014
Location: Las Vegas
Posts: 108
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: '04 545i
Haven't had the crank-no-crank issue since Tuesday mid-day. So that went away before the battery was replaced. The other weirdness was Tuesday afternoon & night. All was normal Wed. & Thurs. The Battery was 3.5 yrs old so I decided to just go ahead and replace it.
Btw the message I'm getting now is "Fault in passenger-restraint system affecting airbag, belt tensioner or belt force limiter."
I'll have the shop read the codes on Monday or Tuesday.
I'm going to get BMWhat & order a wifi dongle. Don't have it now so not much I can do right now.
Btw the message I'm getting now is "Fault in passenger-restraint system affecting airbag, belt tensioner or belt force limiter."
I'll have the shop read the codes on Monday or Tuesday.
I'm going to get BMWhat & order a wifi dongle. Don't have it now so not much I can do right now.
#15
New Members
Thread Starter
Join Date: Aug 2014
Location: Las Vegas
Posts: 108
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: '04 545i
So my culprit for the Pass Restraint Failure might be the BST on the negative cable?
Last edited by Gangplank; 09-06-2014 at 11:09 AM.
#16
New Members
Join Date: Dec 2012
Location: Ontario California
Posts: 447
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2005 545
IF the IBS sends a low wake up signal ( minimum starting voltage ) , the DME will not allow the IBS to wake up the car and stays in sleep mode , not activating the starting systems ..
The BST is the battery safety terminal ,, which is a disconnect feature on the positive battery terminal .. Which disconnects the power cable to the starter ., and has a chip that works in conjunction with the air bag system .. So if there is any movement inside the disconnect mechanizum it will trip the sensor then an air bag warning ...
There are several elements that will trip the same error on the idrive .. getting the code will tell the story and cause of the error ..
#18
New Members
Join Date: Apr 2014
Location: Grand Rapids
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 05 545i
Just curious if you had the battery installed at the dealer, did they "register" the new battery?
My 545 is experiencing the same no-crank deal right now. I accused my wife of not knowing how to start my car because she turned the key 4 times and it didn't crank until the 4th time. I drove it the next day, no problems. Drove it for the last 2 weeks, no problems. Yesterday, it did the no-crank thing to me after picking my son up from school.
Dealer tells me over the phone that they are confident a new battery is the answer. Theirs is $440 installed, with the registration done. $80 just to register the battery if I buy my own and install it myself. The shop manager said that if you don't register it, you can expect your car to continue to behave as if there are electrical issues, because it 'remembers' the condition of the failed battery, despite having a new battery installed.
Anyway....did you get your battery registered?
My 545 is experiencing the same no-crank deal right now. I accused my wife of not knowing how to start my car because she turned the key 4 times and it didn't crank until the 4th time. I drove it the next day, no problems. Drove it for the last 2 weeks, no problems. Yesterday, it did the no-crank thing to me after picking my son up from school.
Dealer tells me over the phone that they are confident a new battery is the answer. Theirs is $440 installed, with the registration done. $80 just to register the battery if I buy my own and install it myself. The shop manager said that if you don't register it, you can expect your car to continue to behave as if there are electrical issues, because it 'remembers' the condition of the failed battery, despite having a new battery installed.
Anyway....did you get your battery registered?
#20
Members
Senior Members
Just curious if you had the battery installed at the dealer, did they "register" the new battery?
My 545 is experiencing the same no-crank deal right now. I accused my wife of not knowing how to start my car because she turned the key 4 times and it didn't crank until the 4th time. I drove it the next day, no problems. Drove it for the last 2 weeks, no problems. Yesterday, it did the no-crank thing to me after picking my son up from school.
Dealer tells me over the phone that they are confident a new battery is the answer. Theirs is $440 installed, with the registration done. $80 just to register the battery if I buy my own and install it myself. The shop manager said that if you don't register it, you can expect your car to continue to behave as if there are electrical issues, because it 'remembers' the condition of the failed battery, despite having a new battery installed.
Anyway....did you get your battery registered?
My 545 is experiencing the same no-crank deal right now. I accused my wife of not knowing how to start my car because she turned the key 4 times and it didn't crank until the 4th time. I drove it the next day, no problems. Drove it for the last 2 weeks, no problems. Yesterday, it did the no-crank thing to me after picking my son up from school.
Dealer tells me over the phone that they are confident a new battery is the answer. Theirs is $440 installed, with the registration done. $80 just to register the battery if I buy my own and install it myself. The shop manager said that if you don't register it, you can expect your car to continue to behave as if there are electrical issues, because it 'remembers' the condition of the failed battery, despite having a new battery installed.
Anyway....did you get your battery registered?