Rear diff failure

[PontusJo]

After I changed the two wheelbearings back I have come to the whining sound must come from the rear diff. I wonder if they all fit from ex vw golf 7, Passat, tiguan, audi a3? If I search by chassinumber I get fewer used diffparts but if i type in my partnumber on the rear diff I get parts from passat, tiguan, a3, karoq and superb. Some with haldex gen 4 and some with gen 5. If a rear diff from ex passat fits with my haldex control unit I would save a lot of money.

 

I hope you understand my bad english.

Pontus

[Scout151]

How did you get on my car is showing the same symptoms I am 100% sure diff bearing are whining when pinion is not under load

[PontusJo]

I changed the complete rear diff with haldex. Got a used one from a audi a3 and changed it myself within 2,5 hours. 

[Scout151]

Did u have to drop subframe for the rear mount bolts? .also did u recode new ecu or just swap your one over

[PontusJo]

Yes you have to drop the subframe about 10-12cm to get access to the rear mount bolts. I used my old ecu.

[Scout151]

Thanks ordored a unit from low milage 2018 should fit my 15 

[ronnievincent]

Had my rear diff diagnosed today, whine and metal filings in the oil! have located one on EBay from a 2017 Kodiaq which has the same 'numbers' as mine 525 010 but the letter codes are different, mine is 0CQ ...........F while the one for sale is 0BR.........M

Anybody know if this would fit my Octavia 3 2015 CRMB 2.0 Tdi SE 4x4?

[ronnievincent]

UPDATE*****UPDATE*****UPDATE

I have now located some other units, from Audi A3's and VW Golf's which have the same prefix, 0CQ and the same part number 525010 with the only difference being the suffix? There is an H and L. My own view is that as long as the prefix and numbers are the same the unit will fit as the suffix and a lot of parts change over the years.

 

[Scout151]

That’s the same idea  .from what I gather your beter off yousing your original control unit .did your diff whine get worse over a short pirod of time ?

[PontusJo]

I used 525010L from a audi a3 on mine which had 525010S. As long as the haldex is from same generation I think they all gonna fit but there can be a small diffrent in the gearing.

[Scout151]

Any one have any issues with pump learn ?