Stop start

D5meister

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C class 2014 2.2D 7Auto
My start stop has never worked. The auk battery and nain batt work.

What else is likely
 

Blobcat

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They might work but not sufficiently well to meet the requirements of stop start
 

mioba

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I actually like stop start. in essence as it must be good for the environment. But it has its flaws, batteries need replacing fairly (too) often, and it puts strain other components.

Stop start needs a well charged aux battery/capacitor. Are you sure its switched on.

Regarding the question, its pure guesswork, get it plugged into STAR
 

onefortheroad

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Me -2019 GLC 350 coupe AMG line. Mrs- ford kuga 65 plate awd powershift .
The best way to 'fix' Stop Start is to pull the auxiliary battery fuse !

Any idea where this is on a 2015 c250. Itll save me pressing that damn button.
 
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D5meister

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I actually like stop start. in essence as it must be good for the environment. But it has its flaws, batteries need replacing fairly (too) often, and it puts strain other components.

Stop start needs a well charged aux battery/capacitor. Are you sure its switched on.

Regarding the question, its pure guesswork, get it plugged into STAR

I do recall a disply of green bricks like a progress bar and it appearing to be Charging. It never got to the 100 % on RHS
Some form of energy harvesting in guise of aux batt. Never seen error message saying it was bad.
 
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D5meister

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They might work but not sufficiently well to meet the requirements of stop start
Are there published vonditions for battery health.
I am aware there is a batt measurement device on the main battery. There is probably same in the aux superxap box.

Has anyone got a broken voltage convertor i can have?
 
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D5meister

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C class 2014 2.2D 7Auto
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IMy local merc indy gave me an aux battery to look into, it had 2 of the 4 super caps blown.
You can get pattern ones for 45 quid with 2 year warranty
 

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