Massive, expensive repairs needed - Mercedes GLA Forum
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post #1 of 37 Old 05-24-2018, 04:02 PM Thread Starter
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Massive, expensive repairs needed

I am a first-time Mercedes owner of a 2015 GLA250 4Matic.


At around 56000 miles, I started experiencing strange clunking sounds and scheduled a service. When I was about to take it in a few days later, I suddenly got all sorts of warning lights, and I saw a pool of oil under the car.


Mercedes identified a failed turbo oil seal which had leaked oil into the alternator and destroyed it. They claimed to be unable to reproduce the clunking sounds; the total repair was $2000 (Mercedes, to their credit, picked up a fair chunk of that).


Now the clunking sounds have gotten louder (58000 miles), and Mercedes was able to reproduce, and they have identified that the rear differential has failed (!). The repair is $6000. And they are saying that Mercedes may not help with this one.


I am very distressed here and was wondering if anyone had similar experiences.

Thanks,
Dan

Last edited by gehlhaar; 05-24-2018 at 04:10 PM.
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post #2 of 37 Old 05-24-2018, 08:55 PM
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If in the USA, the car should still be under warranty. Not the case?
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post #3 of 37 Old 05-25-2018, 01:15 PM Thread Starter
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Warranty expired at 50k miles.
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post #4 of 37 Old 05-25-2018, 03:53 PM
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I recall reading a thread about more frequent than might be expected rear differential oil changes - at 30K and then more frequently after that.

So, one one hand, curious to know your car's service history.

And, does this seem to be a potential problem area with the GLA that makes doing this service quite important?

Death Before Minivan!
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post #5 of 37 Old 05-26-2018, 12:41 PM
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On the 45 rear diff oil changes occur at 10K miles. It's an easy job and sounds like a good one to not fall behind on.
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post #6 of 37 Old 05-26-2018, 03:01 PM
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GLA250 automatic transmission oil and oil filter change requirement is 62,000 miles or 5 years.
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post #7 of 37 Old 05-27-2018, 10:40 AM
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Garage
AS the form is a world wide form it would be good if you completed your profile. You should show your location and year and model of your GLA as it can help as different models are in different countries.

Click on USER CP near the top right and follow directions. Thanks

2019 GLA250 Black/Black replaced 2016 GLA250 Black/Black
Second car 2007 SLK350 Black/Black
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post #8 of 37 Old 05-28-2018, 02:31 AM
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Unless I missed it, I did not see any service timing for the diff of the GLA 250. I find that strange.
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post #9 of 37 Old 05-29-2018, 01:30 AM
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Quote:
Originally Posted by GLAowner View Post
Unless I missed it, I did not see any service timing for the diff of the GLA 250. I find that strange.
It goes back a couple years now reading manuals as we decided on our order, but I believe it is at 20K miles. It's an easy job. The 45 is at 10K miles. I believe that diff is not the same.
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post #10 of 37 Old 05-29-2018, 01:42 AM
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Originally Posted by Wayne View Post
It goes back a couple years now reading manuals as we decided on our order, but I believe it is at 20K miles. It's an easy job. The 45 is at 10K miles. I believe that diff is not the same.
I did not see that in the Maintenance Manual and my car had a dealer B service in Dec with 21000 miles. No diff oil was changed.

Why do these diffs require that service when typically diff oil is changed at 60k miles or much higher for many cars? Also... these rear diffs duty cycle is relatively small as the car is mostly FWD.
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