Now.... what's this???
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Joined: Jun 2008
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
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Joined: Mar 2009
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05 C230Kompressor SC
Identical instance with my 2005 C230K - same error code. How easy to replace the thermostat? Any help is greatly appreciated - thanks a million.
Last edited by maverickdirk; Mar 26, 2009 at 07:40 AM. Reason: Grammar
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Dead easy! Unbolt housing - take out old stat - put in new stat - bolt up. Top up coolant with 50/50% mix of Benz coolant & de-ionized water & get air out of system by squeezing top hose. Cancel P0128 code.
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BMW 520i, C180
Problem solved!!
I took my Benz today at a new shop that opened and well, they found the problem.... it was just the compressor that needed some service, proper oil, proper gas pressure and THAT'S IT!!! the cooling fan does work 
It only cost me $150 for everything they did (diagnostic and repairing)
This is a happy ending story for me.
It only cost me $150 for everything they did (diagnostic and repairing)
This is a happy ending story for me.
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05 c230k
i think i will have to replace the thermostat, i got the code 128 and "check coolant level" msg..
but i got a question, will we have to drain the coolant first? maybe i should replace coolant while im doing this also... what coolant is recommended? i wanna use something premixed because i dunno which type of water to use.. and rather not mix my self..
but i got a question, will we have to drain the coolant first? maybe i should replace coolant while im doing this also... what coolant is recommended? i wanna use something premixed because i dunno which type of water to use.. and rather not mix my self..
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Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
128 means you need a new thermostat. You will at least have to top up the coolant. You need MB coolant meeting spec 325.0 or 325.1. Buy from a dealer & mix 50/50 with distilled or deionised water. MB premix is not available in the US I'm informed.
