Battery Drain

Question

Hi, My car is "eating" batteries since about 3 years. it's been 3 batteries on it. The dealer tested the car, alternator, ground, parasite and they haven't found anything relevant. I wanted to make a test with the remote starter. Is there any way I can remove a fuse or anything to disable the started during a few days without loosing all config on it ? Could the starter be related ?
I'm getting out of luck on this issue until now. Please advice! Thank you

Answer 1

Just unplug power and ground from the unit. It won't loose any programming if it's a Fortin module.

 

Although doing this won't answer any questions as to why its eating batteries.

 

You should perform a parasitic draw test and disconnect modules/fuses too see where the drain is comming from.

Comments

Thank you, I will test it out asap.

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But what is the nominal parasitic drain of these modules? The EVO one for example.

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Evo-One alone is 13mA. +/- 2 mA.

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I have a 2021 wrx sport tech with a mycar2 system installed.

Its been 10 months and the voltage meter is showing that the voltage is depleting my battery.

When I first installed the system, i saw the voltage drop to 11.2 after not driving the car for 1-2 weeks.

I had the dealer test the battery (Subaru oem) and they replaced it under warranty.

However, even with a new battery, the voltage is constantly hovering anywhere from 11.7 - 10.9... All depending on how long I don't drive. It's my secondary car and at times I can go up to 3 weeks without driving it.

I paid Capital tuning (the king of Subarus in Ottawa, Ontario) to do a parasitic draw test. They're results show that the auto starter was reading 84+- milliamps and when the unit was powered off, it dropped to 18 milliamps...

The installer (licensed auto alarm/autostart dealer in Laval, Quebec) says that it is normal that the constant draw could make the battery die if the car stayed parked for 3+ weeks... He stated that he has A Subaru STI and it happens to his car as well.

He mentions that there are three devices that are constantly drawing power

-CPU,

-Device to override the push start and

- (don't quote me) a device that overrides the key detection requirement.

Regardless, I don't feel good knowing that my car battery will die in 3 weeks if I don't drive it.

Should this system be drawing that much milli amps?

Is it possible that it's installed incorrectly and drawing its power from a wrong source?

The dealer mentioned potentially switching the system to an Evo1 because all the devices needed to auto start my car are in one single device.

Please help.