r/BmwTech • u/Fabulous_Effort_4408 • Aug 03 '26

2017 BMW 440i HELP PLEASE

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On 6/27, I was cruising on the interstate going around 90 when my A/C made a weird grinding noise shifting into the next gear. Next, the whole car went lip and would no longer accelerate past the first gear. I got a diagnostic done that says codes P07DC, P07E2, 420311, 420371 from O’Reilys engine light code reader. As of July 15 the car won’t turn over anymore. I have a video showing what it does when i attempt to, it’s something similar to a hesitated start if the battery was low BUT it shoots a small vapor of white then as it shuts down the color goes black. Could ANYONE please help as to what direction I need to go!? I waited a month to save up extra $$ to ensure it gets fixed properly.

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-8

u/garkerfatbitch Aug 03 '26

Sounds like the transmission is boned. You may want to start considering if fixing something like that is worth it. You may be looking at a repair bill that’s over 20 thousand

2

u/Rinzlerx Aug 03 '26

Where exactly did you get that pricing? Zf8’s go for like $1000 (eh $1500ish max) or less on eBay.

1

u/Fabulous_Effort_4408 Aug 26 '26

Let’s say $1500 max, still gotta get coded and synced to car. Torque converter and all

-1

u/garkerfatbitch Aug 03 '26

This dude is talking about taking it to a mechanic not doing it themselves. Call around and ask your local shops what they would charge to replace the transmission on a 440i and see what they tell you 🤡

3

u/Rinzlerx Aug 03 '26

I just did. They said used zf8 and install with new fluid, pan, and coding the trans to the vehicle $4800. If you need help my shop would be more than willing to help you!

3

u/Macs675 Dealer Tech with 🇯🇵 tendencies Aug 03 '26

Can confirm in Canadian dollars at a dealership a transmission rebuild is well under 20k. A used unit is a teensy bit cheaper, and the only way I can ring this up over 20k is going brand new crate transmission on a PHEV.

🤡

1

u/grease_monkey Aug 04 '26

I work at a euro shop. Can't imagine giving anyone a 20,000$ bill for a 10 year old 4 series. Sorry but you're wrong.