[130FeetDeep]

I know a ton of people on the forum have experienced jerking while under acceleration at lower speeds. Many of us have experienced jerking or chugging of the tires with a hard turn at low speeds. It is especially notable in reverse with the wheel turned hard.

For those of you that don't know, there is SIB 27 02 20 regarding the issue. The fix from BMW is replacing the the transfer case oil because they note the factory oil does not meet BMW specs.

My question is for those that have had the transfer case oil changed. Did it fix your problem? Short term and long term? How many miles on your vehicle since the oil change.

I think a lot of us are curious if the incorrect spec'd oil from the BMW factory caused permanent damage or if the transfer case oil change is a long term solution.

[bagd0003]

I've had my TC fluid changed about 1500 miles ago. It immediately fixed the issue. Car is at 43k miles. So far so good.

[ey2001]

Is it on all x drive or just the 50

[eelnoraa]

Off topics, I notice OP put location as North Korea??? BMW is allow there?

[130FeetDeep]

Originally Posted by bagd0003

I've had my TC fluid changed about 1500 miles ago. It immediately fixed the issue. Car is at 43k miles. So far so good.

Good info! Hoping we can get someone with 10k plus. We really need to know if the fluid change is a mask or will fix the issue.

[smovva]

Originally Posted by 130FeetDeep

I know a ton of people on the forum have experienced jerking while under acceleration at lower speeds. Many of us have experienced jerking or chugging of the tires with a hard turn at low speeds. It is especially notable in reverse with the wheel turned hard.

For those of you that don't know, there is SIB 27 02 20 regarding the issue. The fix from BMW is replacing the the transfer case oil because they note the factory oil does not meet BMW specs.

My question is for those that have had the transfer case oil changed. Did it fix your problem? Short term and long term? How many miles on your vehicle since the oil change.

I think a lot of us are curious if the incorrect spec'd oil from the BMW factory caused permanent damage or if the transfer case oil change is a long term solution.

Oil change didn't fix my issue at 47K miles. 700 miles after fluid change and no improvement, BMW approved transfer case replacement. It helped that I have the BMW platinum extended warranty.

[bagd0003]

Originally Posted by ey2001

Is it on all x drive or just the 50

SIB actually addresses several different models, not just X5s.

[chefwong]

In my brief read on the TC, it primarily looks to be 2019 was the -only- year with the wrong fluid. Anybody see anything beyond 2020+

[smovva]

Originally Posted by smovva

Oil change didn't fix my issue at 47K miles. 700 miles after fluid change and no improvement, BMW approved transfer case replacement. It helped that I have the BMW platinum extended warranty.

These were the parts that were changed as part of the transfer case replacement on my 2019 May build X5 xdrive40i:

27-10-7-889-033 RP Transfer Box:271010 Qty 1
22-32-6-860-533 Transmission bearing set:221011 Qty 1
27-10-7-599-326 O-Ring:889520 Qty 1
26-11-7-527-475 Hex Bolt:889520 Qty 3
26-11-7-523-708 Hex Bolt:889520 Qty 3
26-12-7-536-563 Self Locking Hex Nut:889520 Qty 3
26-20-8-657-705 O-Ring:889520 Qty 1
26-11-9-454-792 Screw with Locktite:889520 Qty 4
33-11-7-525-064 Screw Plug with O-Ring:889520 Qty 1
18-30-8-623-284 Muffler Clamp:183013 Qty 1
18-32-8-612-537 Screw Clamp:183013 Qty 1
07-11-9-906-089 Collar Nut:889520 Qty 2
07-11-9-906-938 Hexagon Screw with Flange:071000 Qty 6
26-12-7-521-853 Hex Bolt with Washer:889520 Qty 2
51-61-9-908-657 Hex Bolt:889520 Qty 6
07-11-9-904-024 Hex Nut:889520 Qty 3
22-32-6-865-849 ASA-Bolt:889520 Qty 3

[peter11]

My car is in for this service right now. It is out of warranty and they want to change the fluid ($500). My argument to them is that the SIB says that BMW did not put the correct fluid in in the first case (their words on the SIB) so they should be paying for the correct fluid now, notwithstanding the the fact the car is 6 months out of warranty.

Anybody win this argument?

[Bolt1949]

I likewise paid for the fluid change ($500). The issue has disappeared so far (it's only been 200 miles since the service was done). BMWNA is not covering the fluid change (at least for vehicles past the 48-month OEM warranty), so don't expect your dealership to do it for no charge. I also have the Platinum warranty and have been assured by my SA that if the issue reoccurs during the extended service contract the transfer case will be replaced under warranty (same as the OP). Based on that I'm good through July 2026.

[peter11]

Originally Posted by Bolt1949

I likewise paid for the fluid change ($500). The issue has disappeared so far (it's only been 200 miles since the service was done). BMWNA is not covering the fluid change (at least for vehicles past the 48-month OEM warranty), so don't expect your dealership to do it for no charge. I also have the Platinum warranty and have been assured by my SA that if the issue reoccurs during the extended service contract the transfer case will be replaced under warranty (same as the OP). Based on that I'm good through July 2026.

My Service Advisor just called me back and said the service manager has a "little grid" that says I have to pay 5% of the cost and BMW is picking up the rest. Exactly what that little grid says I do not know. My car has very roughly 45Kmiles and is a 2019. It is nearly 7 months out of warranty. I imagine those data points might be on the "little grid". So, the net result is I am paying $25. You might ask your dealer to review their little grid. Alternatively you could reach out directly to BMW. They can't really put the wrong fluid in, admit as much in a SIB, and then expect you to pay for it when it is not ordinarily a fluid that is replaced during the typical life of the car. At least that's my opinion.

[rmorin1249]

Anyone know if the wrong fluid was put in all 2019 builds?

[E70X5M35i]

Originally Posted by peter11

My Service Advisor just called me back and said the service manager has a "little grid" that says I have to pay 5% of the cost and BMW is picking up the rest. Exactly what that little grid says I do not know. My car has very roughly 45Kmiles and is a 2019. It is nearly 7 months out of warranty. I imagine those data points might be on the "little grid". So, the net result is I am paying $25. You might ask your dealer to review their little grid. Alternatively you could reach out directly to BMW. They can't really put the wrong fluid in, admit as much in a SIB, and then expect you to pay for it when it is not ordinarily a fluid that is replaced during the typical life of the car. At least that's my opinion.

Can someone else try this as well to see if it works? I am thinking to take my 2019 in for this fluid change.. I'm not experiencing any stuttering on acceleration but if it has the wrong fluid, i want the right fluid. And it only makes sense BMW pays for it. But i'm willing to pay $25 for it by all means.

[TurtleBoy]

Originally Posted by rmorin1249

Anyone know if the wrong fluid was put in all 2019 builds?

The SIB doesn't list specific build dates, the 2019-2020 X5 40i's are listed in the SIB.

https://www.tsbsearch.com/BMW/SI-B27-02-20

[peter11]

Originally Posted by E70X5M35i

Can someone else try this as well to see if it works? I am thinking to take my 2019 in for this fluid change.. I'm not experiencing any stuttering on acceleration but if it has the wrong fluid, i want the right fluid. And it only makes sense BMW pays for it. But i'm willing to pay $25 for it by all means.

You're not going to get any traction (lame pun intended) asking them to proacively change the fluid if you are not experiencing symptoms that they can document. That's not how these SIB's work generally.

[ddelX52019G05]

Originally Posted by 130FeetDeep

I know a ton of people on the forum have experienced jerking while under acceleration at lower speeds. Many of us have experienced jerking or chugging of the tires with a hard turn at low speeds. It is especially notable in reverse with the wheel turned hard.

For those of you that don't know, there is SIB 27 02 20 regarding the issue. The fix from BMW is replacing the the transfer case oil because they note the factory oil does not meet BMW specs.

My question is for those that have had the transfer case oil changed. Did it fix your problem? Short term and long term? How many miles on your vehicle since the oil change.

I think a lot of us are curious if the incorrect spec'd oil from the BMW factory caused permanent damage or if the transfer case oil change is a long term solution.

I experienced this issue and have had the fluid changed at 44.6K, I am on BMW platinum extended warranty and currently have 46.1K in miles. While the issue seems largely resolved I do feel there are some lingering effects, however they are subtle. I asked about the possibility of excessive wear and/or permanent damage as a result of wrong fluid spec being in place and the S/A noted that BMW will replace the transfer case. I am thinking it would be best to address the lingering "subtle" effects now and request the transfer case be replaced rather than wait for this to get worse. This way at least I can be without the car on my schedule, hope I don't need to debate the "subtle" surging I still feel.

[E70X5M35i]

Originally Posted by peter11

You're not going to get any traction (lame pun intended) asking them to proacively change the fluid if you are not experiencing symptoms that they can document. That's not how these SIB's work generally.

i see, thanks for the input. i will keep an eye out to see if i have any symptoms in the future

[Roger1012]

Bought a CPO 2019 X5 with around 30000 miles.
As soon as I found out the xfer case TSB I sent in my car to get the fluid changed as I want the right fluid in the car!

But truth to be told, my car never exhibited the “shuddering” issue and I didn’t feel any difference after the fluid change. Interestingly they found a transmission leak when changing the fluid and it was covered under extended warranty.

From what I have read, it seems like this issue happens more often on the v8 50i and M50i models, could it be due to the higher torque from the v8 engine hence producing more stress and wear on the xfer case? Maybe someone can give more insight on this.

[F15_SGM]

Originally Posted by Roger1012

Bought a CPO 2019 X5 with around 30000 miles.
As soon as I found out the xfer case TSB I sent in my car to get the fluid changed as I want the right fluid in the car!

But truth to be told, my car never exhibited the “shuddering” issue and I didn’t feel any difference after the fluid change. Interestingly they found a transmission leak when changing the fluid and it was covered under extended warranty.

From what I have read, it seems like this issue happens more often on the v8 50i and M50i models, could it be due to the higher torque from the v8 engine hence producing more stress and wear on the xfer case? Maybe someone can give more insight on this.

What was leaking on the transmission?

[Roger1012]

Originally Posted by F15_SGM

What was leaking on the transmission?

They mentioned something about the front seal or a bolt, couldn't remember the details but they had to change all the gearbox oil.

[Aimster82]

My car has 46K miles and no symptoms.

Should I pay $500 to change the oil?

2019 5.0