This site provides content using AI translation.
Don't Ignore These BMW 520d Warning Signs!
Ojable
2025-08-18 00:42:01

BMW's top option

The 4-wheel drive system "Xdrive"

While this is a great option,

it does have some drawbacks.

One major issue is the "chronic problem...breakdowns"

A representative example of this is the

transfer case (TC), differential gears

and constant velocity joints, among others.

Today’s featured vehicle is the BMW 520d (G30)

This model has one of the issues~

The front constant velocity joint issuewas brought in for repair.

The front constant velocity joint of the BMW 520d

We will replace it with a new part!

All posting content is based on direct work

and includes sharing information and promoting the shop.

The area around Hwaseong Dongtan, Osan, and Suwon

Recommended BMW import car maintenance center!

NAVER & KAKAO "GeoCar"

The reason for replacing the front constant velocity joint on the BMW 520d Xdrive model

is due to symptoms of a torn boot. Additionally,

When turning the steering wheel or rotating left and right,

if you hear noise, it’s best to get it serviced.

If you have not maintained this part, it is a good time to do so.

The prepared parts for the BMW 520d constant velocity joint are here!

Genuine parts typically cost around 1.5 million KRW (approximately $1,130 USD) each, which is quite expensive, so we recommend aftermarket new parts.

In the case of the G30, currently, only new parts from China are available.

For the F10, genuine OEM GKN brand parts from Europe are available!

However, the price order is genuine > GKN > Chinese aftermarket parts, so keep this in mind.

If you consider this order, it’s not a bad choice~

*
Not all Chinese products are bad, so don’t worry too much. (Considering cost-effectiveness)
*
While it was possible to repair the torn boot, currently, due to concerns of complex issues arising, we only use aftermarket new parts.

Now, let’s lift the BMW 520d and check the

front driver’s side constant velocity joint.

You can see that a lot of dirt has accumulated on the lower arm, right?!

This indicates that the constant velocity joint boot has torn, causing all the internal grease to leak out.

The condition suggests that it has been torn for a while.

In such cases, replacing it with a new part is the best solution.

Additionally, we will also change the front differential oil.

During the constant velocity joint service, a small amount of oil may leak, and contaminants could enter, so

if you haven’t done any maintenance, it’s a good time to do it.

The prepared BMW 520d constant velocity joint is here.

The quality is quite good!~

You can see how often BMW vehicles experience torn constant velocity joints.
They are so popular that sometimes we run out of stock domestically!

If there’s a downside, it’s that some rust may appear on the exterior?!

While there are no defects affecting performance, it can be a concern.

Since it’s better to have quality parts, we will apply rust prevention treatment.

It’s not a big deal, but after the maintenance,

about a year later when we meet again,

you will feel good seeing clean parts, making both you and us happy!

We will remove the constant velocity joint.

You can check the problematic area in the photos~

The G30 520d has the most frequently occurring issues.

You often visit car centers for that, right?!

You definitely need to check this! If you experience symptoms identical to those in the photos,

you should request quick maintenance~

If grease is all over, it could lead to chronic issues during future inspections,
so it’s important to clean it thoroughly!

A key point during installation is ensuring the alignment of the differential mounting area and the knuckle connection area.

Proper alignment will prevent future issues.

Additionally, since there’s a process of loosening and tightening lower parts, it’s crucial to maintain the original alignment during the assembly.

As with all maintenance, nothing is simple.

It requires skill and know-how.

While working, we discovered another problem.
The rear shock absorber on the driver’s side has torn. ㅠㅠ

Exhaust emissions... worrying about the DPF ㅠㅠ

(It seems that there was a previous issue with the intercooler hose, based on the comments.

In any case, I’ll note the rest and schedule the next maintenance.

Today’s work is complete.

You need to take it for a test drive, right?!

As I navigate the speed bumps and corners near the shop,

I check if the new parts are properly installed and if the components are functioning correctly!

Pre-delivery checks are essential~

If everything seems fine, we’re done!
I’ll wrap it up. Since we operate by appointment, it seems to have taken about an hour and a half.

BMW 520d G30..
Since they are older and have higher mileage, many issues arise.
The 2WD models are relatively worry-free regarding issues like those mentioned today.

Only Xdrive owners should pay attention! ㅎ

What can we do~ we need to fix it well and keep driving!

GeoCar
30 Byeongjeom-ro 91beon-gil, Osan-si, Gyeonggi-do
If you have any additional questions or inquiries?! Feel free to ask anytime!

Thank you for reading, and that’s it for today’s post!

Done!

Go to the list