C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

No start no crank when the weather outside is hot

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Old Jul 31, 2024 | 12:57 AM
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lukasMB's Avatar
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w203 2.2cdi 2006
No start no crank when the weather outside is hot

Hello ive been having a problem maybe someone can help me out: c-klass 2.2 cdi 2006 when its hot outside +25 the motor will not crank, when below its all good will start hot/cold. New starter ? But it turns all good when its not so hot outside. The whole winter started no problem once its gets hot outside and the engine is warm you can forget about cranking
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Old Oct 11, 2024 | 12:53 AM
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c200 w203
Originally Posted by lukasMB
Hello ive been having a problem maybe someone can help me out: c-klass 2.2 cdi 2006 when its hot outside +25 the motor will not crank, when below its all good will start hot/cold. New starter ? But it turns all good when its not so hot outside. The whole winter started no problem once its gets hot outside and the engine is warm you can forget about cranking

Hello, have you found the solution. I have the same problem.
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Old Oct 11, 2024 | 11:49 AM
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E320
As temperatures rise, electrical resistance can increase, which might prevent the starter from engaging properly. This could be due to a weak starter solenoid or deteriorating connections that become more pronounced under heat stress. Another possibility is that the engine's heat is causing expansion in electrical components, leading to poor contact or increased resistance, which could prevent the starter from receiving adequate power. To diagnose this issue, I recommend checking the Starter Control Module for any fault codes. This will help identify if there are any electronic issues contributing to the no-crank condition. A full system scanner like the youcanic is ideal for accessing detailed diagnostics across all vehicle systems. Be cautious with basic OBD2 scanners like the Ancel AD310, which are limited to engine codes and may not capture issues with the starter system. Have you checked the starter relay and connections to ensure they are secure and free from corrosion, which could exacerbate the heat-related issues?
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