WHICH BATTERY TERMINAL TO DISCONNECT AND CONNECT FIRST ON BMW
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- Опубліковано 21 жов 2020
- WHICH BATTERY TERMINAL TO DISCONNECT AND CONNECT FIRST ON BMW
If you have BMW and you need to disconnect your car battery to replace the car battery or work on your BMW so you wonder which battery terminal to disconnect first and which battery terminal to connect first, we will explain that in this video. We demonstrated which battery terminal to disconnect first and which battery terminal to connect first on our N52 engine that is in 2007 BMW e90 325i but the valve cover gasket replacement should apply to multiple BMW 6 cylinder engines.
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I absolutely love you! Every time I have an issue I literally come here to your channel to teach my how to replace parts in my bmw 328xi. I’m a woman that loves cats and will absolutely work on my own car but off course idk how to do it and you’ve never failed me. So far you’ve taught me how to replace my coolant tank and how to bleed the system and all, you taught ne how to do my oil changes, how to change a tire, how to replace my break wear sensor. I now just learned how to change my MAP sensor. Hence while I’m heat because with my knowledge I’ve learned from you guys so far is that you must disconnect the battery first before you can change that sensor. Not only will it not damage any parts or your car but it allows the car to reset the computer to program the MAP sensor. I wasn’t sure which way to disconnect the battery and now I know! Thank you so much for ask your EXTREMELY helpful videos. You have saved me so much money! Keri making these videos for every part that us non mechanics can actually do without having to take the engine out. I appreciate you! Also I must add that I watch a lot of different videos on different channels and you are the only one who’s doing the mechanics work correctly! You educare why you di what you do along with the how to do. You’re very thorough on your explanations. Keep up the good work 🙏🏼🙏🏼🙏🏼🙏🏼👍🏼👍🏼🤝🏻🙌🏼
What he is saying is VERY important. I replaced the battery in my 2010 BMW 328i years ago and didn’t disconnect the NEGATIVE post first a damaged the air bag module. Fortunately it was covered under a recall and was replaced for free but if it was not recalled it would have cost me $1200.00.
This is also the best practice on other vehicle models.
It helps prevent any potential short circuit from positive cable touching the car body.
Great information
For all cars is same first - and then + and reverse. If you do in wrong way system is reset,and also you can get electrical short circuit on your car system
I always disconnected negative first (or only) but was seeing people mention positive first, I appreciate this confirmation.
Thanks guys.
Very important to do it exactly this way!!!😳😳😳😳
What size are the bolts a 10mm & what's the other
Thanks!
Do you have a video on replacing the negative battery cable?
What is this small red cable,the one under yellow sticker? If i touch the power goes out
I have short circuit every time I connect battery charger it blow fuses on my charger.
It’s 2006 bmwE60 525i I have FC 2DED in the DME and A559 and A554 in the instrument cluster current status
The car been hit from the rear bumper lately and don’t know if this had to do with it, any suggestions where to start greatly appreciated
how do you get radio code with out pulling the radio out
what is the part number of that side (black panel ) please
I see that’s a Walmart agm ever max battery? What did you code it at? 90 ah?
My oem agm 850 cca 92 ah battery is coded at 80 ah… and it’s was replaced by bmw… weird.. got 7 years on it going to buy the Walmart agm battery tomo just need to figure out what AH it is
I don't have a lot of experience working on cars, just enough to do some basic maintenance and I wanted to remove (temporarily) my front passenger seat on my E87, so the battery must be disconnected (I watched your other videos), however, on my E90 I had to re-code the battery *after replacement (!). If I disconnect both (-) and (+) ends as advised, would it also require coding after reinstallation? I do own INPA and the necessary stuff but rather stay away if possible. :) Kind regards.
You should be alright. Your car will recognize that they battery is the same voltage as your one it disconnected.
@@aaronnickless1706 kind thanks!
The only reason you need to code a *new* battery, or really the only two reasons are:
1.) Because the computer establishes a charging profile for your battery that changes over time to adapt to the decreasing battery lifespan and capacity
2.) In the event that your new battery is a different size/capacity (in terms of amp-hours worth of charge it holds), and/or the new battery is AGM when the old one is a flooded lead-acid style battery (or vice-versa--if you're replacing an AGM with a flooded battery), then it tells the computer the correct battery type and capacity which is also important for ensuring the correct charging profile is used.
Without registering and coding in a new battery, your car might under-charge or over-charge your battery and it's lifespan can be reduced as a result. So taking out your battery and reinstalling it, even if you charge it back to a full charge before reinstalling, is totally harmless and doesn't require any registering or coding because the car is already set up to charge that battery.
What about the battery post in the engine compartment (positive). Do anything with that or leave that connected?
you never disconnect that. and once your battery's ground has been disconnected, that thing is nothing more than a piece of metal with (hopefully) a red plastic cap on it. It's just a post connected to the battery by a long wire to be used for jump starting/charging so you don't have to screw with the battery and wiring in the trunk, which would introduce a lot of additional opportunities for damaging something.
@@allmycarsisbroke
Thanks! Got it!
Disconnect - 1st and , connect +1st
My husband disconnected the negative first and now we have electrical issues and multiple obd codes. How can we trace the problem? We don't have a local dealership and no one in our area works on BMW.
I'm having same trouble
Sans here. What was the issue and the fix?
Disconnecting negative first is what you're supposed to do. Did you not watch the video?
@allmycarsisbroke that's what they did and now they're having issues can you read ?
That red distribution box. I need to know more about it. What's in it. Can it break? Mine was submerged in water.
Nevermind. It just has a row of fusible links in it. I cleared the rust out of it, polished the terminals, and bought new nylock nuts for the main terminals because the originals were rusted down to dust. Testing with a multi-meter shows all the fuses good and the rest is just a simple bus bar that connects all the major systems in the car to that single cable on the positive battery terminal.
Hi . The car has a small accident on the rwar and on the dashboard was appear the airbag light. I've change the bst cable but still is appear airbag light. What i must do ???.
Thanks.
Check codes, the seatbelt pretensioners probably went off
@@brodiehaward thanks
my 2001330 cabby had a red thing on the positive cable wg hat is that? the battery is fully charged, but i get the battery popup on the dash
oh and theres no codes
What is the 3rd?
👍
I replaced the battery on my 328i, now it won’t start
BMWs are baby’s when it comes to some things. You have to have the car programmed for the new battery so it recognizes that the battery is new.
Be sure the car is off as well.
Be sure the car is turned off beforehand.
Everytime he says okay I take a shot... ok?
Why does he sound like he is underwater?
Why are you in a hurry when talking?
Life goes by fast
All that fast talking, and nothing on what kind of ratchet and size to loosen the negative terminal. Isn't that kinda important to know?
No, because if you're working on cars there's a base level of knowledge you need to acquire before doing things that can cause damage.
Thanks!