2012 Genesis V6 Electrical Problems with Radio Receiver/FOB

[lnmclemore]

I have survived most of the electrical problems that plagued scores of thousands of 2012 Genesis Sedans. However, my FOB must now be inserted into the slot below the radio to turn on the engine. Also, my FOB can not be used to open or lock the car doors or trunk and I must use the physical key in the FOB.

I had dropped one of two FOBs onto a concrete street curb where a slight amount of sprinkler runoff water was flowing. I picked up the FOB immediately and dried a tiny amount of water off but it would not work. What is puzzling is that my other good FOB would not work with radio telemetry as well. It was also puzzling that my physical latch inside the driver's side would not work, even with the inserted FOB and engine running. This makes me believe there may be an electrical problem originating inside the car's radio receiver since the other working FOB was working. The 40-bit rolling code might being failing or shorting for what ever reason that we usually referred to as Gremlins in our shorting electrical circuits.

The car was serviced for this electrical problem when both FOBs were working when the trunk latch would not open with a transmitted radio signal from either FOB. I purchased a third FOB online but it did not come with coding instructions. I will likely need to take the car in but would appreciate any comments or suggestions about what the problem is or might be. Thanks ahead of time.

 

[PaulC]

I have a 2012 with the tech package. I have had an intermittent issues that perplexes me. For no apparent reason, the fobs stop working, the clock and trip counter reset, the temperature resets to farenheit, the rear window screen goes up, there is no screen/radio function, the climate resets to auto. Always the same symptoms. Must use key and start with fob in dash slot. I can park the car like this, and when I come back hours later, everything works but for the resets I mentioned. I can park it normally when working, then come back to it working normally but rest after changing it back. No predictability whatsoever. Might happen once in a year, then happen three times in a week. Can't get any Hyundai dealership mechanic to talk to me. No information online. You are the first to mention it.

 

[PaulC]

Problem resolved. Simply remove and replace the yellow fuse inside the fuse box located just inside the driver side door.

 

[PaulC]

I have survived most of the electrical problems that plagued scores of thousands of 2012 Genesis Sedans. However, my FOB must now be inserted into the slot below the radio to turn on the engine. Also, my FOB can not be used to open or lock the car doors or trunk and I must use the physical key in the FOB.

I had dropped one of two FOBs onto a concrete street curb where a slight amount of sprinkler runoff water was flowing. I picked up the FOB immediately and dried a tiny amount of water off but it would not work. What is puzzling is that my other good FOB would not work with radio telemetry as well. It was also puzzling that my physical latch inside the driver's side would not work, even with the inserted FOB and engine running. This makes me believe there may be an electrical problem originating inside the car's radio receiver since the other working FOB was working. The 40-bit rolling code might being failing or shorting for what ever reason that we usually referred to as Gremlins in our shorting electrical circuits.

The car was serviced for this electrical problem when both FOBs were working when the trunk latch would not open with a transmitted radio signal from either FOB. I purchased a third FOB online but it did not come with coding instructions. I will likely need to take the car in but would appreciate any comments or suggestions about what the problem is or might be. Thanks ahead of time.

Try removing and replacing the yellow fuse inside the driver side door. Worked for me after years of dealing with this intermittent problem.