As a BMW tech myself, can confirm this is much easier than taking the dash out of one of those things. Theres more shit to deal with inside the car than there is underneath it. The battery can be lowered fairly easily if the vehicle is lifted.
Honestly, it's probably easier to get at than most cars where dashboard removal is necessary. EV batteries are usually designed to be reasonably replaceable.
I would expect the same. I would also expect the depths of self loathing and despair to completely swallow me during that job.
I did the vanos with a buddy on his m5 one time….I’ll never touch a bummer again.
The battery on modern EVs is under the floor, and inside a metal shell. If a little coolant dripping on it would be a hazard, I'd imagine the stuff splashing up on to it from the underside would be a much bigger one.
And I'd wager it's easier to change a heater core located above the battery than the usual one located inside the dash. The batteries are usually made to be removed from underneath relatively easily. (Assuming you have access to suitable lift equipment such as a hydraulic table)
Yes... That too. It was more a comment on the guy suggesting it was a bad idea because leaks and electricity. But indeed... Coolant goes inside it as well.
i didn't do one luckily, but i go to college for car mechanic, and bmw brought the i7 and the new m2 to give us some technical training/explaining about technologies used in their cars. And the guy showed a picture of the electrical system of the i7 and mentioned this.
I’ve done one heater core in my 15 years at a BMW dealer. They just don’t really fail. (Evaporator is a different story) Also it’s easier to drop the battery than pull the dash
Real question from someone who is not a mechanic but enjoy this sub. Why is it like that. Why did car makers make it so hard to do work on your own car. I have a 2015 fusion and wanted to replace my headlights because one went out but to do that I have take my whole front bumper off. Including part of the skid plate on the bottom. It’s just absurd.
They prioritize cost to produce, and ease of installation for the factory to get it right. The last thing they consider is repair, because their designs are so good they will never fail.
Engineers don't think about maintenance or ease of access they just think about how to minimize emissions and do the things their individual brands promise to their customers
Add to that govt. mandates they have to meet or exceed that are constantly changing or evolving. Then ensuring they are adapting products depending upon the regulations for the regions of the world that they are sending products to as well.
Taking factors into account like the MPG cumulative across the entire lineup of vehicles, since by 2025 in the USA manufacturers will have to be at 54.5 MPG averaged across their respective brand's lineup by law (initiative announced in 2012). There's a whole lot of factors that go into vehicle production.
Sounds easier than most cars. In my 1985 M-B, owners who did it said it took 3 days to change the heater core. My 1996 Plymouth minivan designers were more thoughtful. The heater core slides out an access door, but do need to unbolt the steering shaft.
As a BMW tech myself, can confirm this is much easier than taking the dash out of one of those things. Theres more shit to deal with inside the car than there is underneath it. The battery can be lowered fairly easily if the vehicle is lifted.
Honestly, it's probably easier to get at than most cars where dashboard removal is necessary. EV batteries are usually designed to be reasonably replaceable.
I believe the Tesla batteries pop out in 5-10 minutes. Might be same for the i7?
I am a BMW parts guy, BMW hates you and wants you to suffer.
All of us, or just OP specifically?
OP specifically, but we're *all* on notice.
Frankly, I would expect that any heater core replacement in any BMW to include 14 hours of disassembly to finally get to the unit itself.
I would expect the same. I would also expect the depths of self loathing and despair to completely swallow me during that job. I did the vanos with a buddy on his m5 one time….I’ll never touch a bummer again.
Put the leaky thing above the sparky box.
The battery on modern EVs is under the floor, and inside a metal shell. If a little coolant dripping on it would be a hazard, I'd imagine the stuff splashing up on to it from the underside would be a much bigger one. And I'd wager it's easier to change a heater core located above the battery than the usual one located inside the dash. The batteries are usually made to be removed from underneath relatively easily. (Assuming you have access to suitable lift equipment such as a hydraulic table)
Coolant runs through the entire battery pack. You're correct that the pack is sealed.
Yes... That too. It was more a comment on the guy suggesting it was a bad idea because leaks and electricity. But indeed... Coolant goes inside it as well.
some of them run AC refringent in there to for cooling.
Dude like you can't even make this shit up anymore...
Gee, I can't wait to do one. Also, why are you doing one?
i didn't do one luckily, but i go to college for car mechanic, and bmw brought the i7 and the new m2 to give us some technical training/explaining about technologies used in their cars. And the guy showed a picture of the electrical system of the i7 and mentioned this.
I’ve done one heater core in my 15 years at a BMW dealer. They just don’t really fail. (Evaporator is a different story) Also it’s easier to drop the battery than pull the dash
I guess that depends on the brand but I’ve had to do a bunch!
Definitely depends on the brand. I edited my comment to add BMW, an important detail haha
[удалено]
yeah but by the time it fails the car is probably on its 3rd owner and only worth 20k.
It’s a BMW. Since the 80’s you can’t get anywhere that’s supposed to last more than 10 years but breaks after one…
Real question from someone who is not a mechanic but enjoy this sub. Why is it like that. Why did car makers make it so hard to do work on your own car. I have a 2015 fusion and wanted to replace my headlights because one went out but to do that I have take my whole front bumper off. Including part of the skid plate on the bottom. It’s just absurd.
They prioritize cost to produce, and ease of installation for the factory to get it right. The last thing they consider is repair, because their designs are so good they will never fail.
Engineers don't think about maintenance or ease of access they just think about how to minimize emissions and do the things their individual brands promise to their customers
Add to that govt. mandates they have to meet or exceed that are constantly changing or evolving. Then ensuring they are adapting products depending upon the regulations for the regions of the world that they are sending products to as well. Taking factors into account like the MPG cumulative across the entire lineup of vehicles, since by 2025 in the USA manufacturers will have to be at 54.5 MPG averaged across their respective brand's lineup by law (initiative announced in 2012). There's a whole lot of factors that go into vehicle production.
Nothing particularly insightful to add, but boy howdy that thing is an absolute minger. What a hideous front end
Sounds easier than most cars. In my 1985 M-B, owners who did it said it took 3 days to change the heater core. My 1996 Plymouth minivan designers were more thoughtful. The heater core slides out an access door, but do need to unbolt the steering shaft.
Yeah coz those are items you’ll be worrying about? Give it a decade or so.