Turn off the TPMS ligth in Accent GS 2009 - Hyundai Forums : Hyundai Forum
 
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post #1 of 5 (permalink) Old 12-28-2017, 05:15 PM Thread Starter
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Turn off the TPMS ligth in Accent GS 2009

Hello everyone:

A couple of months ago, the TPMS light on the board of my 2009 Accent GS (hatchback) went on after a full brake service. My mechanic changed the brake fluid, and the next day, the TPMS light was on. When reading the DTCs of the TPMS module I observed the code C1315. That code indicates a fault in the RF channel, precisely in the right rear pressure sensor, according to information I found on the network. There is a possibility that the sensor will be damaged in the service.

As background I tell you that two days before the problem, I installed a DVD player, power acoustik pd-623B and a rear camera. I assumed that the installation was the cause of the problem, but I am changing my mind after reading information about it that details that the operation of the equipment does not interfere with the TPMS system; however, it is on the list of possible causes of the problem.

I did some tests with a scanner, I rewrote the ID of the sensors in the system, I deleted the DTC, which turned off the light on the board, but after a few days the code reappeared and the TPMS light is on.

When I bought the car, one of the wheels did not have the pressure sensor. I got a used one and I suspect that the battery is low or dead at this date, it only lasted one year. It's installed on the right rear tire, by the way. Another cause for the TPMS light to turn on.

Because two possible causes point to the sensor as the reason for the TPMS light on, I decided to buy a new set of pressure sensors, four of them, because the battery life of these devices is between 7 and 10 years. They have been working for more than 8 years now, and if one of them is damaged, the others also go to the same state.

While I'm shopping I do not want to see the light of the TPMS on the board, and I put my hands to work to turn it off:

1. Remove the lower central deck of the dashboard, the one with the air conditioning controls. (Photo 1).

2. Disconnect the control cable from the air circulation gate to get room to work. (Photo 2).

3. Locate the TPMS module (black box under the radio), and in the wiring of conductors that leave this module, locate the orange cable (in the 2007 and 2009 model they are the same color). (Photo 3 and photo 4).

4. Cut the orange wire, leaving sections of it long enough for a future reconnection (Photo 5).

5. At this point I extended the two ends of the cable to the rear of the glove box to reconnect them when installing the new sensors (Photo 6).

6. The end of the cable that goes to the set of conductors, and that gets to connect to the board, joins the negative terminal (metallic part of the vehicle); and the other end, the one remaining in the module, is covered with electrical tape. If the cable that goes to the board is not attached to the negative terminal, the light will stay on. This is logical since it is the condition in which the warning should light, if the module fails, if it detects a problem or if it is purposely removed. (photo 7)
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post #2 of 5 (permalink) Old 12-29-2017, 06:36 AM
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Or.. just put a piece of black tape over the light.

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post #3 of 5 (permalink) Old 12-29-2017, 11:57 AM Thread Starter
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It's true... you're right, that's the other way, the easiest. Happy New Year.
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post #4 of 5 (permalink) Old 12-29-2017, 01:35 PM
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So what you did is disconnect the ground for the dash warning light right? I need to do this with my Gen Coupe.

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post #5 of 5 (permalink) Old 12-30-2017, 03:00 PM Thread Starter
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Not really Red Raspberry. To turn off the TPMS light, the cable of this signal must be connected to ground, due to the configuration of the circuit that controls the light. When the TPMS module is working under normal conditions, this means that it did not detect any problems, both, the TPMS light and the low pressure warning light receive a ground signal to remain off. That is the reason why it is not enough to cut the cable. The end that remains on the board must be connected to ground, at least in accent 2009. In your car you need to check the circuit diagram.
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