Transmission service-40,000 miles-CLS550 - Mercedes-Benz Forum
 
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post #1 of 9 (permalink) Old 10-04-2017, 06:42 PM Thread Starter
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Transmission service-40,000 miles-CLS550

Approaching 40,000 miles on my 2014 CLS550. Dealer has told me that in addition to Service A, I need to have the transmission serviced (Fluid, filter, gasket, etc.) Is that part of the 40,000 maintenance recommended? Know about the brake fluid flush, but was not certain about the transmission service. Any help would be appreciated.
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post #2 of 9 (permalink) Old 10-05-2017, 09:00 AM
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Brake fluid every 20,000 miles, transmission every 40,000 see attachment.
Attached Files
File Type: pdf 14 CLS maint.pdf (149.9 KB, 199 views)
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post #3 of 9 (permalink) Old 10-05-2017, 06:57 PM Thread Starter
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konigstiger: Thank you very much for your reply. I am going to print the pdf that you included. I like my CLS550 and plan on keeping it for three more years. Just bought a MB Extended Warranty (36mo.-75,000miles) Want to maintain the vehicle properly, but at the same time, not do service that is not required or recommended. Appreciate !!
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post #4 of 9 (permalink) Old 10-05-2017, 09:13 PM
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Ummmm

It appears the 40K service is for the CLS63 (engine code 157). The 278 engines; i.e. CLS550s, states 70K.

Is this correct or am I reading it wrong?

Best,
ERic
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post #5 of 9 (permalink) Old 10-06-2017, 06:01 AM Thread Starter
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embassured: Interesting. Have been confused as to the engine code on my CLS550. Thank you for clarifying the code as 278. It would seem reasonable the CLS63 change out the transmission at 40,000 miles. Higher performance etc. Feel now I am being mis-lead by the MB dealership into having it done at 40,000 miles. The pdf provided by Konigstiger clearly indicates 70,000 miles for the "278" engine. Appreciate the heads-up. Understand dealerships wanting to make as much profit as possible, but deceiving customers is not a good long term business practice. Thanks again !!
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post #6 of 9 (permalink) Old 10-15-2018, 10:21 AM
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Personally, the brake fluid needs to be changed ONLY when the chem strip indicates the fluid has started to become acidic. As for the transmission fluid. It is fully synthetic and any article you read shows that synthetic fluid doesn't break down. I had a 2007 Jaguar XJR that had 150K miles without ever having a transmission fluid change and it never gave me a minutes trouble. I changed the spark plugs at 148K and even those weren't bad. The gap was the same as the new ones and they weren't even discolored. Sometime changing things just because it is recommended is not always the right answer, it's all about the money. Example, my newly acquired Edition 1 S Coupe has 6K miles. The previous owner had paid for the prepaid maintenance, so I let the dealership talk me into the big service (which was paid for) they did everything except for the transmission service and told me that next year I would need spark plugs and a transmission service. Well, that isn't going to happen. Who in their right mind changes spark plugs and transmission fluid at 7K miles. It is recommended and my recommendation is, "Forget about it". I drive about 500-1,500 miles a year. I'll never need these ridiculous services. If you drive a lot of miles a year and your environment is harsh yes, follow some what but don't be fooled by the dealerships. They are only out to make money.
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post #7 of 9 (permalink) Old 10-16-2018, 05:35 PM
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Your recently purchased exteneded warranty requires that the vehicle is maintained a Mercedes recommended intervals. Should you suffer a transmission failure during the warranty term and the tranny wasn't serviced when it should.....what do you think they will say?

From elsewhere on this forum
In 2012 the standard Merc's (non AMG's) "changed to FE-ATF, a new low-viscosity transmission fluid that is blue instead of red. The FE-ATF, along with new planetary gears, bearings, and internal seals, provides less friction and improves fuel economy." These changes allowed Mercedes to extend the service interval to 70,000 miles from 40,000 miles.

After a few million miles of testing, Mercedes has established service recommendations to maximize the life of relevant components.
Warranty or not, why in the world would you NOT service the transmission at the recommended interval?
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post #8 of 9 (permalink) Old 10-16-2018, 10:32 PM
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Quote:
Originally Posted by embassured View Post
278 engines; i.e. CLS550s, states 70K. Is this correct or am I reading it wrong?
Correct, my error.
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post #9 of 9 (permalink) Old 10-29-2018, 08:21 PM
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konigstiger
I'm sure everyone appreciates all your efforts on Benzworld and, ahem, other areas in which you contribute. My guess is most people do not realize all the time it must take. Thank You!

By the way, that must be one special Pinto you drive!
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