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Bad jumpstart

Rpetty.13

New member
Location
944turbo
I made the mistake of letting a friend hook up the jumper cables to his car. I assumed he could handle red to red and black to black but apperently not. I jumped the car with the cables on backwards, and instantly the horn of my gti began to blare and the headlight washers shot out and began to spray fluid. We jumped it the right way after that but it couldn’t run on it’s own without giving it throttle. I drove it around the parking lot and it ran fine but then it beeped and the check engine light, along with the epc light and the traction control light came on. I left it as is because I feared I’d mess it up more. I should also note radio lights and radio itself quit working. Any thoughts? 2006 gti 2.0L
 

3carmonte

Gelbrain
Location
Seminole, FL
Ride
2007 GTI DSG Coup
There is a fuse in the radio in my car. It wouldn't hurt to test all fuses in the power distribution compartment. Hopefully you haven't fried any relays or your ECU. @doc280 is right. The OBD2 port test will tell you something and allow a reset of the codes. (Free at Auto-Zone even...) Do you have access to VAG-Com? I understand that is the window to everything in our cars.
 

GTI's

Go Kart Champion
Location
MD
I hope you are a lucky person because this could get expensive real fast, your friend does have insurance I hope.
 

Rpetty.13

New member
Location
944turbo
I have a
There is a fuse in the radio in my car. It wouldn't hurt to test all fuses in the power distribution compartment. Hopefully you haven't fried any relays or your ECU. @doc280 is right. The OBD2 port test will tell you something and allow a reset of the codes. (Free at Auto-Zone even...) Do you have access to VAG-Com? I understand that is the window to everything in our cars.
I’m currently going to where it’s parked at to take the battery out, try to start it and go from there. There’s not much I can do because it’s in a parking lot that’s ab 20 mins away from my house/shop
 

GTI's

Go Kart Champion
Location
MD
First Take a DVM and check you battery for proper voltage if fine +12.6V then check the fuses SA in the front of the fuse box next to battery box then look at SB top of fuse box and finally SC side of driver dash panel.

SA main fuses front of box SB top of box





SC fuse panel



Next do a scan and see what it shows, a generic ODB scan tool is not going to cut it, need Vcds or something equivalent if you can save scan info for later fine. Clear codes and then try to start engine, if it starts or not read codes again and see what you have for current Dtc.

May also want to just post in one place and not all over the place for the same issue, surprised a Mod has not closed down or joined the others make life easier.
 
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GTI's

Go Kart Champion
Location
MD
Ok so you have the enhanced Carista scan tool and not the generic OBD scan tool which makes a big difference when working on these cars.
 

doc280

Ready to race!
Location
North Carolina
Ok so you have the enhanced Carista scan tool and not the generic OBD scan tool which makes a big difference when working on these cars.
I have a BAFX OBD2 bluetooth interface (Amazon - $20 or so) and use my tablet or smartphone. The Carista app is so easy to use and keeps none computer guys, like me , out of trouble from messing lines of code up. I have used it to customize the features of my GTI and clear fault codes, ranging from bulbs to airbags.

When a bulb goes out on these cars and it is replaced, until the fault code is cleared the new bulb will not work. Thinking because of this "feature" clearing the fault codes might help the OP. Carista is an easy and cheaper option than the cable.
 

GTI's

Go Kart Champion
Location
MD
Agree that it needs to be scanned and scanned with a tool that will look at all modules installed(not just engine, trans, abs)on that particular car and see what it shows and if it can be cleared, if a module is dead or offline you will not get any info from it and can not clear Dtc.
 

3carmonte

Gelbrain
Location
Seminole, FL
Ride
2007 GTI DSG Coup
Agree that it needs to be scanned and scanned with a tool that will look at all modules installed(not just engine, trans, abs)on that particular car and see what it shows and if it can be cleared, if a module is dead or offline you will not get any info from it and can not clear Dtc.
@GTI's - Your Knowledge is great Obe-Wan. I know nothing about Vag-Com, VCDS, Can-Bus Architecture, or most of the stuff you can do with a smart phone. I have learned that without that knowledge, diagnosing problems on these cars is "poke & hope". Is there a tutorial in here I can access do you know? I do want to learn. 😌
 

doc280

Ready to race!
Location
North Carolina
@GTI's - Your Knowledge is great Obe-Wan. I know nothing about Vag-Com, VCDS, Can-Bus Architecture, or most of the stuff you can do with a smart phone. I have learned that without that knowledge, diagnosing problems on these cars is "poke & hope". Is there a tutorial in here I can access do you know? I do want to learn.😌
This is the reason I am suggesting Carista, it is all check block when you open the app. Otherwise idiot prof.
 

GTI's

Go Kart Champion
Location
MD
Vcds will do the same thing all you need to do is run an Auto Scan, one button then it goes through every module in car and makes a report that you can save and send out to others. If you want to clear all DTC in the report just press another button. One of the benefits of VCDS is that you also have the ability to use their forums if you have any issues or need help.
 

doc280

Ready to race!
Location
North Carolina
Vcds will do the same thing all you need to do is run an Auto Scan, one button then it goes through every module in car and makes a report that you can save and send out to others. If you want to clear all DTC in the report just press another button. One of the benefits of VCDS is that you also have the ability to use their forums if you have any issues or need help.
Cool
 
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