Question about 2009 Kia Rio

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I hooked up my battery cables backwards now most of my electrical system is not working. What could it be

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1.) a fried CPU (the cars computer)
2.) a lot of blown fuses in the fuse box under the hood
3.) a lot of burnt wiring in the harness.

hopefully just the fuses.. use this video to help you check the fuses. Its a free youtube vid not mine but correct non the less.

Posted on Dec 30, 2012

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Posted on Jan 02, 2017

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My dash lights went out when someone fried my battery by putting cables on backwards. Don't know exactly what happened. So don't know how to fix. Help please.


Many of today's cars have more electronics than mechanical items anymore. Rather than the old point-to-point wiring that was the norm, now the cars use computerized serial data buses to transmit control signals and the like. Hooking the battery of backward is a big no-no on these systems as it fries everything since the protection circuits aren't designed to ward off such errors. If you are having multiple electrical issues after a battery "backward boo-boo", you're best taking the car to an auto electric specialist and explaining what happened. They can assess the level of damage and can tell you if it may be cheaper to replace the car than repair it......

Jan 02, 2016 | Cars & Trucks

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I have a 98 isuzu rodeo and my friend hooked up the jumper cables wrong one day and now none of my dash lights or any of the switches on my dash work (4x4, cruise control, etc.) and it's stuck in 4x4


What can be damaged by hooking jumper cables up the wrong way ...

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Do not connect your jumper cables backwards or bad bad ...

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RedditOct 25, 2012 - Do not connect your jumper cables backwards or bad bad things ...What I'm trying to say is, does this usually happen when you hook the cables upwrong? ... So basically there is only one way to find out for sure what going to .

Oct 16, 2015 | Isuzu Cars & Trucks

5 Answers

What happens when you hook a care battery up backwards?


Hello Glen, Bad bad things can happen when you hook up a car battery backwards. If your car has a high quality electrical system it might only blow out one or two main fuses. If not, it can cause havoc on the wiring system and burn out the alternator, computer, sensors, modules, and stereo system to name a few.

Jul 08, 2014 | 1996 Geo Prizm

1 Answer

Hooked battery ou backward want crank


Ok. You have conflicting statements here. You say it won't crank. That is supposed to mean that the engine will not spin when the ignition switch is turned. Cranks but won't start sounds more like what you are getting at from the second statement that spraying gas in cause the engine to "hit" as you say. Am I to understand that you hooked the battery up backwards? If you did I'm very surprised you got that much to work. By your lack of knowledge of standard mechanic terminology, you come across as one who does not normally work on vehicles. I don't know what to tell you, but if you are careless (or ignorant) enough to hook the battery up backwards, the level of work that will be required to repair the electrical damage done by that act is most likely beyond your ability to execute. Take your car to a good mechanic or better yet, and auto electric service center.

Nov 06, 2013 | 1988 Ford F 350

1 Answer

Replace fuse


You will need the whole system inspected for dmage.

Jun 13, 2013 | Mazda Cars & Trucks

1 Answer

Put a battery in backwards in a 2007 Santa fe 2.7, now it's stuck in gear and electrical system is messed up


well buddy if you hook a battery up backwards then just basiclly cooked your cars computer you gonna have to go get anothrer one

Apr 05, 2013 | 2005 Hyundai Accent

1 Answer

I'm trying to install a new battery in my 1984 Nissan Sentra. When I hook up the terminals, the wiring starts to smoke leading me to believe that the hook up is backwards. What is the correct hook up for...


Hi and welcome to FixYa, I am Kelly (Electrician since late 1960's)

Ground goes to the - pole. Hooking it up backwards can damage your alternator, wiring harnesses and fuse links. (Fuse link damage is a nightmare to sort out!) What you do by hooking up a battery backwards is turn your vehicle wiring harness into a giant heating element. (<-Very bad!) If you just changed the battery and then you hooked up the cables with the smoking cable result you certainly did connect the cables backwards. The ground cable... will connect to chassis and in most cases the engine body / transmission somewhere.
The positive cable will eventually connect to the starter. Follow the ground lead from the battery to the chassis or engine body connection. (metal to metal contact) Once your sure that is the ground cable; connect it to the - post of the battery AFTER connecting the positive post terminal.
If you have a newer audio system you will have lost your radio codes. We can not provide the codes for anti-theft reasons. Activation Codes must be from the car dealer or audio system retailer.
Thanks for choosing FixYa,
Kelly

Feb 27, 2011 | Nissan Sentra Cars & Trucks

3 Answers

Battery needed a charge, it was jumped with cables hooked up wrong, bought new battery but wont start what is problem


if you connected the jumper leads up wrongly you have most likely put 24 volts into the system instead of 12 volts & damaged all of the electric components including the computer, you will need to consult an auto electrician to sort out the problem.....hope this helps.....cheers

Jul 19, 2010 | 2004 Saturn ION

2 Answers

BOOSTER CABLES WERE REVERSED-----HORN SOUNDED----HAD BATTERY TESTED----IT IS FULLY CHARGED----HOOKED CABLES BACK TO BATTERY---NO POWER


This vehicle electrical system was made to run on negative ground. Connecting The battery up backwards destroys electronic components in a flash.

If you are lucky and we mean real lucky you may have burned up the fusible link powering the electronic system.

RECOMENDATION:
Seek professional help.
Put this car in the shop. there will be many more electrical problums that need to be addressed.
We do not think it will easily recover from this.

We are Sorry that we can not provide you any better news, But we have seen this one before and it never works out well.

Hope this tip helps to solve your problem

R/
David

Feb 26, 2010 | Kia Sportage Cars & Trucks

2 Answers

Not sure how to hook up plow motor to battery? Its an old fisher speedcast plow with cable controls thats electic over hydralic.It has pos and neg. cables and a solenoid on the pos. cable. I assume you...


The heavy + should be connected to the battery through the solenoid for the motor. There should be wires to control the solenoid (an electric switch, you know). The - goes to the truck's frame at a place of your choice. The ground must be solid, you know that, right?

I think if I were doing this install, I would hook the plow ground with the battery ground on the fame or where ever it is located.

The plow control should be mounted for your convenience inside the cab.

Lets review: Plow motor | ground to ground, hot to solenoid (motor side) | solenoid (battery side) to battery | solenoid control wires to cab.

Thanks for your question at FixYa.com

Jan 02, 2010 | 1999 Ford F350 Regular Cab

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