Urgent car is a paper weight

[Jbasel]

So last night I had started my car and it was running turned it to accessories and flashed it the flash worked keyed it off then waited then back into accessories but then my car wouldn’t start and the dash lights and lights on the radio starting going dim and then bright when I would try to start it tried flashing it back to stock the ktuner did it’s normal thing but instead of the dash having every light on the display and everything just disappeared now I can’t start my car or anything even tried jumping it and my ktuner screen just flashed on and off and I can’t interact with it when it does stay on long enough please help

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[Doc_Mello]

Sounds like a dead battery, mate. When was the last time you changed it?

 

[Spunkmire]

I've seen a lot of people recommend hooking the car up to a charger while flashing just in case the battery dies in the middle of it.

Hope you get it figured out.

 

[Jbasel]

I've seen a lot of people recommend hooking the car up to a charger while flashing just in case the battery dies in the middle of it.

Hope you get it figured out.

Yeah I had to re tune it using a laptop and have my car jumped at the same time but now my air bag light turned on while I was driving for no reason

 

[Bunhyung]

I agree with Doc_Mello, Dead battery.
In my own personal experience, you should not try to flash the ECU without being hooked up to a battery charger.

 

[Spunkmire]

Drive the car around for awhile.

Once the battery has some charge, disconnect it for 10 minutes. Plug it back in and drive it around for about 15 minutes turn it off and then back on. This should reset all the error codes.

 

[Jbasel]

Drive the car around for awhile.

Once the battery has some charge, disconnect it for 10 minutes. Plug it back in and drive it around for about 15 minutes turn it off and then back on. This should reset all the error codes.

I’ll try that thank you

 

[gtman]

100% ALWAYS flash a tune hooked up to a battery tender (trickle charger, not a regular charger). It's just a smart peace of mind thing 'cause flashing a tune is battery intensive and our stock batteries aren't the greatest.

OP, add your car to my tuning thread. Lots of good tuning info there. Click on the link in my signature below this post.

 

[KensBlueGenX]

The biggest issue seems to be that the headlights come on when the flash starts which takes the battery (especially a not so new one) down fast. I'm not sure even a charger can always keep up with that. Other than taking the bulbs out when doing a flash, anyone come up with an idea/way around that?

 

[gtman]

The biggest issue seems to be that the headlights come on when the flash starts which takes the battery (especially a not so new one) down fast. I'm not sure even a charger can always keep up with that. Other than taking the bulbs out when doing a flash, anyone come up with an idea/way around that?

Just be sure your parking brake is engaged.

 

[Ducota]

Test your battery, takes all of 5 seconds. Maintenance is key.

 

[KensBlueGenX]

Test your battery, takes all of 5 seconds. Maintenance is key.

Yeah I'm always a bit surprised that a battery load tester isn't part of more people's tools set.

 

[Ronny2019]

Just picked up this lithium battery that fits our cars it only weighs 6.38lbs and it has got 2x the power

• XS-Power XV5100R Group 51R Lithium Titanate Battery

 

[Ducota]

Yeah I'm always a bit surprised that a battery load tester isn't part of more people's tools set.

Yea so cheap also a OBD2 scanner.

 

[Ducota]

Also if your voltage is low check the cell fluid level. As long as you don't see any white corrosion you can top off with distilled water. My Si battery started to crap out at less than 5k miles, 2 cells were actually below the plates with slight corrosion. Added distilled water and no issues at 17893 miles.
Saved me a couple hundred buck.

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