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P0128 Check Engine Light

This is a discussion on P0128 Check Engine Light within the Mercedes-Benz CLA45 AMG forums, part of the Mercedes-Benz CLA Model Specific Forums category; Originally Posted by Rapidfirerob This may help: https://www.cartalk.com/mechanics-files Appreciate it! I'll crosscheck this with some Yelp/Google reviews....

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Thread: P0128 Check Engine Light

  1. #11
    Veteran SChaudhery's Avatar
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    Quote Originally Posted by Rapidfirerob View Post
    Appreciate it! I'll crosscheck this with some Yelp/Google reviews.
    Rapidfirerob likes this.
    CLA45 AMG - Delivered 05/27/2014! View my progress at see-el-aye.tumblr.com

  • #12
    jmc is offline
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    Quote Originally Posted by SChaudhery View Post
    The coolant thermostat. The guy was pretty chill. He told me the thermostat costs $135 but Mercedes sells it for a little over $200.
    for your reference online prices are right around 135~140 so thats good they aint jipping you on parts with hohoho markups
    though you have assign some time to do the deed ... its a bit of a mess ... draining / yanking belts-pump-stat / cl-cl-cl-cleaning / reassembling
    and most importantly the water system must be burped till its hydraulic else those damn air bubbles will cause local hot spots and that takes time
    some lazy techs just refill and let the driving cycle push all the air bubbles out into the expansion tank ... bad idea cuz by that time the damage is already done ... and the alternative short start/stop engine cycles trick to do that without the high temps is really bad for the motor
    if the darn labor rates werent so high it would be great to just let them deal with it ...

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