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Remote starting kills battery


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jsigna 
Copper - Posts: 151
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Joined: July 25, 2014
Posted: June 04, 2016 at 8:21 PM / IP Logged Link to Post Post Reply Quote jsigna
Hey all. Weird problem.
For about a year I havr been having issues with my battery. If the car radio or lights were left on it would die. Also if the car sat for a few days it would die.
I finally replaced the battery today with a optima red top.
I put the battery in and thr first thing i did was a remote start to find no cranking. I got a guy to out a battery powered boost charger on it and it cranked real quick and died. Let it sit longer and then started it with the key. Started up no problem.
Went about my day after driving it a bit and remote started it. Cranks quick and nothing tries a few more times. Metered it to find it was drained to 10v. Mind you a brand new red rop.
Boost it with another car.. Remote start Cranks once and nothing. Regular starts up no problem. Later i tried regular starting it iver and over. No issues. Remote start and won't crank more than a split second again. Also drained the battery to the point the key would not start it.
Then I did a trickle charge on 12v high (wall powered) I remote start it and it started right up multiple times like nothing.
Pull it off the charger and remote start doesn't crank for more than a second again.
What the hell.. Does remote start require more amperage as opposed to regular start? Could the battery just be a bad battery? Could the viper 2 way color screen remote start or idatalink bypass modules be messed up? Remember with the trickle charger the remote start works flawless.
Car is a 2013 wrx sti. Any help would be greatly appreciated.
tonanzith 
Gold - Posts: 593
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Joined: July 18, 2008
Location: Washington, United States
Posted: June 04, 2016 at 11:57 PM / IP Logged Link to Post Post Reply Quote tonanzith
I would like to point you in the right direction but there are a LOT of variables. A couple things I'd need to know.
What is the voltage during cranking with the key. ?
What is the voltage during cranking with the remote start. ?
A couple things I'd like to clarify. As far as amperage during cranking between using a key vs remote start YES there is a difference but very nominal and not enough to keep a car from starting otherwise remote starts would be useless. The reason for the difference is that using the key makes a mechanical connection to activate the ignitions and relays in the vehicle. When remote starting the remote start draws power to activate it's own relays which it in turns sends signals to the vehicle for it to activate the vehicles relays and starter. Again, only nominal power.
The starting from trickle charge but not jump starting or a jump pack sounds more like a coincidence. It depends on how the modules are programmed. If they are programmed for voltage sensing and not tach then the remote start is likely failing when jumping or on a jump pack because the remote start sees a high voltage and thinks the vehicle is running where as a trickle charge is generally a lower voltage and so the remote start doesn't think the vehicle is running yet and continues to crank. It is relative to the voltage the car was putting out during initial programming of voltage sensing.
Personally I NEVER use voltage sensing. It is highly unreliable. More so in the winter. I would check that a tach wire is ran and or the alarm is programmed for tach sensing and that the tach is programmed. This is 99.9% effective. I believe this will fix your issue.
If this does not than it comes back to voltage during cranking and the difference in voltage during cranking with the key vs remote start.
Unlikely but there could be a short during remote start that causes excessive drop on voltage and resulting in failed starts and battery drain. Which could explain your battery drain issue if leaving the car for a few days and the battery drain. But those could more likely be separate issues.
Gary Sather
jsigna 
Copper - Posts: 151
Copper spacespace
Joined: July 25, 2014
Posted: June 05, 2016 at 12:07 AM / IP Logged Link to Post Post Reply Quote jsigna
I am really hoping it is separate issues. Is there a possibility I have a bad battery? This car was starting perfectly with rs with thr old battery. Now i have an even better battery and this issue.
I have it set to virtual tach and never once had a an issue. Not sure of the voltage when starting. Pretty sure it stayed at 12 when I tried it via failed rs. After 2 or 3 shots it went to 10 volts.
I really hope it isn't the rs. If the battery was dead for a few days could the viper settings have been reset? Like the flew relay settings?
jsigna 
Copper - Posts: 151
Copper spacespace
Joined: July 25, 2014
Posted: June 05, 2016 at 12:09 AM / IP Logged Link to Post Post Reply Quote jsigna
Also the trickle charge was 15v and the boost said 13.7
jsigna 
Copper - Posts: 151
Copper spacespace
Joined: July 25, 2014
Posted: June 05, 2016 at 12:10 AM / IP Logged Link to Post Post Reply Quote jsigna
Trickle charger is the wrong word. Big battery charger is what I mean.
tonanzith 
Gold - Posts: 593
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Joined: July 18, 2008
Location: Washington, United States
Posted: June 05, 2016 at 12:11 AM / IP Logged Link to Post Post Reply Quote tonanzith
Again. I do not recommend virtual tach aka voltage sensing. Being as the car starts just fine with the key it's not your battery. More likely it all needs reprogrammed since the battery change. If a tach wire is ran the program the tach. If you INSIST on virtual then use virtual and program a higher crank time.
Gary Sather
tonanzith 
Gold - Posts: 593
Gold spaceThis member consistently provides reliable informationspace
Joined: July 18, 2008
Location: Washington, United States
Posted: June 05, 2016 at 12:14 AM / IP Logged Link to Post Post Reply Quote tonanzith
The trickle charger may show 15v during charging but does not put out much amperage. So during starting the trickle charger drops voltage significantly. Where as jump starting or a jump pack or even a second battery maintains a higher voltage during cranking.
Gary Sather
jsigna 
Copper - Posts: 151
Copper spacespace
Joined: July 25, 2014
Posted: June 05, 2016 at 12:14 AM / IP Logged Link to Post Post Reply Quote jsigna
Okay I will try that. Strange how it worksfor almost 2 years though.. But you think they flex relay and other viper programming could be shot from a battery swap?
jsigna 
Copper - Posts: 151
Copper spacespace
Joined: July 25, 2014
Posted: June 05, 2016 at 12:17 AM / IP Logged Link to Post Post Reply Quote jsigna
It is one of these. http://www.walmart.com/ip/15140192?wmlspartner=wlpa&adid=22222222228010182944&wl0=&wl1=g&wl2=m&wl3=40839233312&wl4=&wl5=pla&wl6=78652928792&veh=sem
It's weird how it starts no problem every single time when this is connected. Every time.
tonanzith 
Gold - Posts: 593
Gold spaceThis member consistently provides reliable informationspace
Joined: July 18, 2008
Location: Washington, United States
Posted: June 05, 2016 at 12:17 AM / IP Logged Link to Post Post Reply Quote tonanzith
Not shot. Just needs reprogrammed. If it has always been on virtual tach it's has more than likely been programmed before for a higher crank time than the alarms default setting.
Gary Sather
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