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      03-03-2017, 02:31 PM   #1
Akademe
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Start/Stop

So anyone else had issues with their start/stop? I'll begin by mentioning that I usually turn it off as soon as I get in my car BUT recently it doesn't activate even when I leave it on....which now has me worried that its an underlying issue with the car. I took it for service last Monday and my service manager told me that it could be because the headlamp bulb was out? which didn't make a whole lot of sense to me but he said since it all has to do with the electrical systems that code it was throwing for the headlamp malfunction could very well cause it. A week later and it still isn't working...weather has been fair for the most part in the 70's since I read some threads stating that weather could also affect it.....sooo with that being said anyone have any ideas on that?
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      03-03-2017, 04:01 PM   #2
tim818
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Check the battery. The ASS won't work if the voltage level is too low IIRC. I'm surprised the service manager gave you such a crappy reason...

Tim
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      03-03-2017, 05:33 PM   #3
uncleruckus
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Searching around online, I found the following list of reasons why the stop/start may not shut down the engine:
  • The car is coasting (manual transmission)
  • Brake vacuum reading is too low (manual transmission)
  • Insufficient brake pedal pressure is being applied to hold the vehicle stationary (automatic transmission)
  • Stopping on a hill/downhill with a 12% or greater gradient
  • If the steering angle is more then 6 degrees
  • If the steering wheel is being moved after approximately one second of coming to a stop
  • The system has not yet be activated by going over a speed of 5mph for automatics, 3mph for manuals since the last engine switch off
  • If the gas pedal is being pressed (engine must be at idle speed only)
  • You're coming to a stop from reverse
  • The driver gets out of the car
  • If Hill Decent Control (HDC) is activated
  • If the engine is not up to temperature
  • If the carbon canister is being purged
  • if the grade of the fuel is too low for the engine
  • Transmission adaptation is active (automatic transmission)
  • The hydraulic pressure accumulator is not yet up to pressure (automatic transmission)
  • Stop-and-go traffic - system is only activated by driving over 5mph for automatics, 3mph for manuals
  • Batter charge is low
  • Outside temperature is colder then 37.4 F / 3 C
  • Outside temperature above 95 F / 35 C and the air conditioning system is on
  • Fogging of the windshield is detected by the IHKA system
  • Climate control system is on but passenger compartment has not yet reached desired temperature
  • ABS system was used when coming to a stop

Last edited by uncleruckus; 03-03-2017 at 05:34 PM.. Reason: spelling
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      03-03-2017, 05:47 PM   #4
murphius1118
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Consider yourself blessed that the ASS is not working...LOL. Worst feature ever. I disabled the ASS via coding and haven't looked back.
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      03-04-2017, 09:10 AM   #5
Akademe
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I'm going to take it back and have them check it out....as much as I hate the system it worries me simply because my logic is telling me since it doesn't work something else is broken lol..
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      03-04-2017, 10:44 AM   #6
Billfitz
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If there's a legit reason for it to not work then you'll see the slash indicator on the instrument panel when you come to a stop. If you don't see that and it doesn't work something's wrong.
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