i searched the engine bar but couldnt find an answer..
my scion tc 05 cpu got messed up last night. my friend was jumpin my car cause my car had died, but he did it the wrong way and sparks flew out. after that, all my dash lights were on like the engine check light, abs, ebrake, and tire pressure.
i went to a shop and the guy told me it would probably cost around $500-$700 to fix it including labor/diagnostic! -___-" .. is this guy rippin me off? i heard it wasnt that pricey to fix.. what do u guys think?

 

disconnect ur battery and let ur car reset itself and see what happens.. and check ur fuses after that

 

^^^What he said.

But how the ____ did your friend ____ that up. The cables are usually red and black so you can't mix them up.

 

Wow that sucks chunks yo!
We all have a friend like this but at the same time we know better than to let him jump the car himself. Did his car explode too!?
Color coding > than your friend

 

We have had a few cars towed in that have done that. Its usually pretty expensive, diagnostic wise. You have to trace everything to see if it got fried. Possibly ecu/bcm as well. I would start by checking all the fuses (in car and under hood) and replacing any burnt out. Maybe you got lucky. There are a few big ones under the hood that are different looking than normal fuses make sure to check them as well.

 

Usually when that happens it will blow a 100 amp fuse that's underneath of the main fuse block under the hood. I haven't done this repair yet but we've had a few cars towed in to my dealer when this issue happens.

 

BTW...why is this in the xA forum?

 

I was wondering the same thing

 

fixed..

and.. replace your fuses.

 

i did disconnect the battery. i had to buy a new one cause my old one was done.
i dont know how it happened, i saw my homie do it and the color coding was right. i think the battery was put in the opposite way?
sorry i didnt mean to put it in the xA forums.

 

did you replace your fuses yet?

 

Since both posts are similar, I'll tell you "how" this happened.

When jump starting modern automotive vehicles, you do not connect "red" to positive and "black" to negative. (Or vice versa or blah blah blah with your colors). Basically you want to connect The jumping vehicle with the leads on both positive and negative of the battery. For the vehicle being jumped, connect the negative or "ground" lead to an engine grounding point, NOT THE NEGATIVE BATTERY TERMINAL. Connect the positive lead, then do the jump start. Placing a connection on both terminals can end up in a battery explosion, and/or sparking in this case. When this happens things break.

P.s., tell your "homie" he's an idiot.

 

red first, black last in installing.. and then remove black/negative first, then red/positive last (it's the safest method)

ALSO... it DOES NOT MATTER if you connect the negative to the battery or to the chassis ground on the vehicle being jumped... it is only PREFERABLE that you do. if you do connect both batteries as such, it WON'T HARM ANYTHING. the only mistake your idiot friend did was mess up the wires and hooked them up incorrectly... as in... yes, he hooked up the positive to the negative of another.
(that's when sparking will occur.. and things go "pop")

he blew out a bunch of fuses... (which you only need to replace)... and after smacking up upside the head for doing that... replace the battery as necessary and start your car again..

 

i saw my homie do it, the color coding was right. i think the battery was put in the other way. ..well i went to my dads friends shop and he told me my ecu is dunzos. he's gonna order another ecu and install/reprogram it.
and yes, he did check the fuses..

 

.. so what if the battery was put in the "other way"??

negative is negative.. positive is positive..
it's marked clearly on the battery.

there's no excuse.

clearly the "color coding" that you witnessed was incorrect.

 

well then i failed. i already feel like it was my fault even though i did it right on my car. thats what i get for being lazy and not doing it on his car.

 

ah, i see what happened. yea, the only way to have made sure was to really examine the cables and the battery right after the spark happened.

it's an honest mistake and not too uncommon for someone to make it.

best wishes on getting everything fixed. i've never seen an ecu damaged from anything like this though.. most times what fuses that need to be blown to protect the car, is blown.

i'm surprised no fuses did.

 

I disagree with this. Engine ground is much safer then going to the negative battery.

 

idk, the mechanic plugged this thing in my car and said the ecu was messed up. im gonna trust his judgement. im pretty sure he wont rip me off either since he and my dad are friends.

btw, right now, my front right tire is balding. its balded about 1.5 filters of a cigarette.
i'm planning on buying new tires/rims in about 6-8 weeks from now.
is it dangerous to drive when my tire is balding so much?

 

it's not much a matter of safety. it's mostly a matter of what is more effective.
engine ground is more effective...

the whole hydrogen explosion blah blah.. thing is very, very, VERY unlikely..

with the ecu.. if your dad's friend of a mechanic didn't check the fuses.. he's a moron. yes his obd2 scanner/reader or whatever he hooked up is going to see something wrong.. especially if the ecu isn't getting power from the blown fuses.

and duh, it's not safe to drive with bald tires. what the hell do you mean 1.5 filters of a cigarette?