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Discussion Starter · #1 ·
Received a battery jump in the dark from a friend who mistakenly had crossed the polarity. It blew the 150amp alternator fuse which is now replaced. Now, the ABS, ESC Off and brake lights stay on after starting. I have checked all fuses and the main relay, both under the hood and in side of dash, and cannot figure out what is causing this. The auto shift lever is locked out and I don't want to override it not knowing if it will cause any damage. Any ideas? Also, what protocol OBD system would this auto fall under? Thanks to anyone that may offer their ideas.
 

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I'd disconnect the battery for a few minutes to reset the PCM - hopefully it will clear the lights and reset the shift lock. If not, it's possible that you've fried the PCM. Your 2007 uses OBDII.
 

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Hmm, brake lights stuck on.... has it had the 092 recall done, about a 3yr old recall, still some floating around that aint been done yet.. or is the switch mounting loose and switch sitting sideway where pedal pad will not push plunger back into switch to turn off the lights ??

ESC/ABS light, could be because lights stuck on, logic problem..

The rest of your concerns. DVOM is your friend, going to need to probe each leg of each fuse and verify source voltage to verify fuse is not open circuit.

Engine control is OBD-II.

You will need appropriate software to access the ABS/ESC module, as with codes present, communication of shared data from PCM to ESC will be shut down due to system fault, so you need to remedy your ABS/ESC fault, clear codes for fault and communication shut down.

Time to go visit the dealer' service dept... have them run VIN on WEBDCS and check for recalls that may be open.
 

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In other words, time to go visit your dealer.....

And just in case, print out sbr's post above, show it to them......
 

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Discussion Starter · #6 ·
Thanks to all of you for your suggestions.

Problem is now partly solved. I disconnected the battery overnight in hopes of resetting the PCM. Upon next starting, same idiot lights stayed lit. I manually over-rid the shift lever lock out and took it for a short drive. About 0.3 miles into drive, the PCM must of reset itself and the ABS, ESC Off, and emerg. brake light indicator went out. I thought GREAT - Problems solved. However when I arrived home and went to park it, the shift lever lock out is still activated and only by manually overriding the switch can I move the lever past neutral back into park. I once again tried resetting the PCM by battery disconnect, tried repeatedly locking and unlocking the car with remote (in case the shift lever lockout is associated with the security system). and rechecked continuity across all of the fuses - None of which has corrected the shift lever lockout problem. Any one??
 

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It could be the brake light switch as sbr711 mentioned earlier in the thread. Maybe just a coincidence that it went out at the same time as the faulty jump or maybe the jump caused it to fail.
 

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Go get the thing scanned, then you will know what modules have codes, as with the COMM line linking modules together, if there is safety related fault in 1, it may carry into another module, and then the COMM line will be cut off, since info from 1 module being wont do another module any good..

Hyundai can do a "Fault Code Search" where it will scan all the modules as selcted in 1 screeen, I'll post pic later of the screen shot when I get home in couple hr.
 

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I keep reading to head to the dealer every time the abs light comes on. BS. One time is was a dirty sensor after a brake job spilled oil then accumuated road dirt. Another time it was gunk on the bearing wells. Simple cleaning. Plus other simple fixes like draining the on-board memort after the battery is disconnected with by using the horn. Let common sense be a guide. Sounds like dealers have infiltraded this forum. Just something to think about. All Codes are easy to extract.
 
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