[Bob Engelhardt]

... I took an easier approach - I just used wire taps to connect the module to the wires coming off the back of the push button. ...

I thought about doing that but I want to be able to remove the relay in case I have a warranty claim & want to avoid the dealer using the mod as an excuse to deny my claim. Are the wire taps removal without leaving bare spots?

 

[JohnCNA]

There would be some very slight nicks on the insulation of the two wires behind the switch. . The only way you could ever see that is if you pulled the plug out and pulled the wires down.

 

[Bob Engelhardt]

There would be some very slight nicks on the insulation of the two wires behind the switch. ...

Thanks. I was thinking about the risk of bare spots shorting, but it doesn't sound like that would be a problem.

 

[JimmyV]

There is a much simpler way to do this. It's free and takes 10 seconds. Simply disconnect the sensory cable that is attached to the battery. I have a 2019 Subaru Forester and did this 5,000 miles ago. Works great. Start Stop never engaged again. I found the fix from a mechanic in the UK. on line Spoke the the service guy at Subaru and he said doing this would cause no damage. The only issue you will have is you will get a warning for about 10 seconds when you start the car telling you the feature has been disconnected. Also the A with a circle around it continues to flash while driving so I put a piece of black tape over it and that was good enough for me.

 

[ForesterBill]

@JimmyV What else does the sensory cable do, if anything?

 

[JimmyV]

@ForesterBill The only other thing I know is that it regulates some sort of smart charge to the battery which actually prevents the battery from being fully charged.... Most people want their battery fully charged.

 

[ForesterBill]

It's just a matter of time before something like this is available for all makes and models:

Autostop Eliminator for 2015-2020 Ford F-150

This Autostop Eliminator works with Ford F-150 model years 2015, 2016, 2017, 2018, 2019, & 2020. Autostop Eliminator will disable auto stop on a Ford F-150

www.autostopeliminator.com

 

[DockingPilot]

And not soon enough.


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[boureesub]

@ForesterBill The only other thing I know is that it regulates some sort of smart charge to the battery which actually prevents the battery from being fully charged.... Most people want their battery fully charged.

I would be very cautious about disconnecting this sensor without truly understanding ALL the implications. It provides data the ECM uses to control battery charging.

The below info is from Subaru regarding the sensor (located on the battery negative terminal).

"Battery Sensor that measures charge and discharge currents of a battery, voltage, and temperature is adopted to accurately maintain charge conditions of a battery. Various types of measurement data are transmitted through the communications circuit with ECM. ECM controls the generation amount of the generator based on the data and maintains charge conditions of the battery"

 

[HotelLimaCharli]

Looks like Ford and Chevy owners are able to buy a device called the Autostop eliminator. Plugs into the back of the control panel where the Auto start-stop button is. No need to hack anything or cut any wires so your warranty will not be voided. This device will simply press the Auto start-stop button for you when your ignition is started. If you want to turn your Auto start-stop back on simply press the button.

Can someone here who is a lot smart than me create something similar for Subarus? I would gladly pay good money for a product like this.

 

[Kevin]

@HotelLimaCharli

There is a much simpler way to do this. It's free and takes 10 seconds. Simply disconnect the sensory cable that is attached to the battery.

Why not do this and just run a cable to a switch in the cabin? Simple!

 

[bbottomley]

IIRC, question has arisen as to what else this cable might get involved in.

 

[boureesub]

The cable provides current/voltage/temperature info to the ECU charge algorithm. It’s more than an auto stop/start doohickey.

 

[Kevin]

@JimmyV was already running it for 5000 miles as at 3 months ago. It would be interesting to hear from that member as to how it's going now.

 

[boureesub]

I'd be interested as well. Could be there is a "fallback" routine for the alternator, absent having any info on the battery.

 

[Kevin]

Quite possibly - I "imagine" it has something to do with a "smart alternator" as many later model cars have now. These are a real pain for people with auxiliary batteries because they won't get fully charged with normal voltage sensitive relays (VSR) and so some electronic trickery is needed.

 

[boureesub]

By trickery you're referring to battery-to-battery chargers? I'm familiar with the Sterling-Power device for the very reason you mention, a smart alternator in the loop. Renogy, and CTEK have similar offerings.

 

[Lmchu]

I've found my way is to stop a car length away with foot on brakes very slowly release and inch your way to the vehicle in front and hopefully the light will change and you can move on.

 

[DockingPilot]

Please dont try these maneuvers behind me. [emoji85]


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[Kevin]

By trickery you're referring to battery-to-battery chargers?

Yep. I have a VSR in the Foz and a CTEK in the ute. But neither have smart alternators so is fairly simple.