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Discussion Starter #1
HELLO FRIENDS I HAD A LITTLE PROBLEM, FEW DAYS AGO I HAD AN ACCIDENT, FRONT OF THE CAR IS DAMAGED BUT THE AIRBAGS DID NOT OPEN. AFTER THAT WHEN I TRIED TO START THE CAR IT HAS NO LIFE AT ALL NO DASH LIGHTS COMING NO ANY MESSAGES. SOME SAID IT HAS A FUSE ON 12 VOLT BATTERY AND FOR SAFETY IT BLOWS WHEN CAR IS IN ACCIDENT. DO YOU KNOW ANYTHING ABOUT IT ? HOW CAN I START THE CAR?
 

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Looks like the charging unit has been damaged. The Volt will not start with a damaged charging unit.
 

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This is not a 12V battery issue.

The picture shows right front bumper damage and the car's High Voltage charger is exposed (silver unit with orange HV wiring and coolant lines). It's likely it was damaged in the collision. These are in the $1000 range and are sometimes in short supply. The part may take a few weeks to get.
 

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Discussion Starter #4
download (1).jpg the hit was in the middle of front bumper so the right side is undamaged. i wonder why the dash lights gone? its fully black. i think some kind a problem should be in 12 v battery.
 

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the hit was in the middle of front bumper so the right side is undamaged. i wonder why the dash lights gone? its fully black. i think some kind a problem should be in 12 v battery.
You may have other damage as well. How do your fluid levels look for the HV battery , engine coolant, electronics coolant?

But if you convinced it has nothing to do with all the damage in the front, sure, replace the 12v battery. If you think it's a fuse, check all the fuses. But looking at the front of the car, the 12V battery would not be my first thought.
 

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HELLO FRIENDS I HAD A LITTLE PROBLEM, FEW DAYS AGO I HAD AN ACCIDENT, FRONT OF THE CAR IS DAMAGED BUT THE AIRBAGS DID NOT OPEN. AFTER THAT WHEN I TRIED TO START THE CAR IT HAS NO LIFE AT ALL NO DASH LIGHTS COMING NO ANY MESSAGES. SOME SAID IT HAS A FUSE ON 12 VOLT BATTERY AND FOR SAFETY IT BLOWS WHEN CAR IS IN ACCIDENT. DO YOU KNOW ANYTHING ABOUT IT ? HOW CAN I START THE CAR?
Yes......safety sensors

Looks like the charging unit has been damaged. The Volt will not start with a damaged charging unit.
Without the charger..........you got nothing.
 

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Discussion Starter #9
where are this crash sensors located? i checked and i have no fluid leak the radiator has a little bent but the fluid is in norm level.
crash sensors you mean airbag control module? but my airbags are fine they did not open.
 

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Gen I Volt pdf service manual is floating around. Google is your friend.
Appears the car does not have 12V since you got no power at all.
It is possible that low voltage wires got shorted somewhere and some fuse got popped.
Once you get the car to power on, you have high chance that the car will not have green "ready" that's needed to drive, and you may consider investing in VCX Nano GDS2 reader for $100 that will read and reset codes for you.
 

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Discussion Starter #11 (Edited)
i wonder why my airbags did not open? what about scanner do i need VCX Nano? or GM MDI? which one is better? i have some autel obd scanner i think it will not help me((( crash sensors where are they located in front? because airbags did not open could the sensors got some damage?
 

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Does the Volt disable the HV battery in certain collisions? Maybe need dealer intervention?
It does. But in that case the car would turn on, with a slew of error messages and a check engine light and refuse to shift out of Park.

The fact that the screens are dead does make me think the 12V is drained. I also think there are likely high voltage problems from the picture, and damage to one or more of the radiators which may have drained the coolant needed by one of the systems.
 

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It does. But in that case the car would turn on, with a slew of error messages and a check engine light and refuse to shift out of Park.

The fact that the screens are dead does make me think the 12V is drained. I also think there are likely high voltage problems from the picture, and damage to one or more of the radiators which may have drained the coolant needed by one of the systems.
Post #9 from OP states no loss of any coolant fluids. I have to assume that OP knows how to correctly check for those fluid levels.

Assuming that the 12v battery is still good (apparently it was prior to the accident), I would think that a blown fuse is preventing voltage from reaching the computer controlling the screens and starting circuitry. I would examine those fuses and replace the ones that have blown. I would expect that the new ones would blow, too, indicating a short or shorts in the low voltage lines.

If examination of the fuses proves negative (all are good), then I would suspect that a fail-safe condition has been activated and would research for such a circuitry.

This pdf on page 11 and subsequent shows the location of SIR sensor locations. Perhaps the two located in the bumper are the culprits.

https://www.gmstc.com/WebTreeDocuments/download.asp?lID=9&nID=600

 

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Any high tech piece of equipment has built in safeguards to prevent it's operation when something is damaged to prevent an unsuspecting operator from making a bad situation worse - You could do more damage driving it home and double or triple your eventual repair bill - If it's under warranty, Chevy doesn't want to be responsible for that, so they make it where you can't hurt it even more than the accident did

If it's still under warranty, get it towed to the dealer. If it's not under warranty, have it towed to the nearest shop who can work on it . . . . . probably also the dealer in the case of a Volt

Or . . . . mess with it yourself, hoping you're not making the situation worse - Your insurance company might not want to be responsible for fixing anything you break AFTER the accident either . . . .

Don
 

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Discussion Starter #15
thanks all my friends each your advises is very important to me. we were talking about SIR sensors, but i wonder if they are damaged why my airbags did not open? can the sir sensor be a reason for not starting car? i am going to buy a scanner so which one you will recommend VCX Nano? or GM MDI?. at first i think i am going to check 12 volt battery fuse and lines
 

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HELLO FRIENDS I HAD A LITTLE PROBLEM, FEW DAYS AGO I HAD AN ACCIDENT, FRONT OF THE CAR IS DAMAGED BUT THE AIRBAGS DID NOT OPEN. AFTER THAT WHEN I TRIED TO START THE CAR IT HAS NO LIFE AT ALL NO DASH LIGHTS COMING NO ANY MESSAGES. SOME SAID IT HAS A FUSE ON 12 VOLT BATTERY AND FOR SAFETY IT BLOWS WHEN CAR IS IN ACCIDENT. DO YOU KNOW ANYTHING ABOUT IT ? HOW CAN I START THE CAR?
See those orange cables? Those are carrying 350VDC. Since they're exposed, I'd say you've got more serious problems than just the 12V systems not coming up.

It's likely there's a large number of trouble codes that a technician will need to clear before the car is drivable. You're looking at a day or more just to clear those codes, and that may require repairing non-obvious damage.
 

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Discussion Starter #17
i solved it)))) the problem was 12 volt battery fuses. i changed it and the car starts. i wonder why my airbags didn't open? can someone show me where are the impact sensors located in front? because i think its not on front impact bar
 

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i solved it)))) the problem was 12 volt battery fuses. i changed it and the car starts. i wonder why my airbags didn't open? can someone show me where are the impact sensors located in front? because i think its not on front impact bar
There are some calculations that go into whether the pop an airbag, and even front end collisions that are slow enough may well not discharge an array of bags. (Dominant reason for this is that replacing airbags is EXPENSIVE. It's a $1000+ to fix per bag, and that goes straight into the "much higher than average cost to repair" category if it happens much more often than with competitor's vehicles.)
 

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i solved it)))) the problem was 12 volt battery fuses. i changed it and the car starts. i wonder why my airbags didn't open? can someone show me where are the impact sensors located in front? because i think its not on front impact bar
Check the radiator support cross bar, on the engine side. There should be two front end sensors.
 

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i solved it)))) the problem was 12 volt battery fuses. i changed it and the car starts. i wonder why my airbags didn't open? can someone show me where are the impact sensors located in front? because i think its not on front impact bar

That's great! Which fuses did you replace?
 
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