The Original i30 Owners Club

THE GARAGE (SERVICE, MAINTENANCE & REPAIR) => DIESEL => Topic started by: Litz97 on July 31, 2018, 19:54:09

Title: Brake lights not working - testing brake light switch
Post by: Litz97 on July 31, 2018, 19:54:09
Hi Guys,

I own a I30 Diesel CW 2009.
Have had this problem for a couple of days now. ESP came on about the same time, but I don't know if it's related?

Googled around and seems most problems is on grounds of break light switch. After testing fuse ok, I took it out and tested according to this video:  :link: HOW TO TEST YOUR HYUNDAI BRAKE LIGHT SWITCH - YouTube (http://www.youtube.com/watch?v=hyElmrHiFPw) - It seems to me that pin 1 and 2 and again 3 and 4 is giving a readout when switch is pushed in the video?  When testing mine,  1 and 2 reacts when pushed, but 3 and 4 gives readout as soon as I connect my multimeter and turns OFF when switch is activated? So not only is it different from the video, pin 1+2 and 3+4 works completely opposite  each other? Should I consider this defective?
Title: Re: Brake lights not working - testing brake light switch
Post by: tw2005 on July 31, 2018, 21:38:24
Hi Guys,

I own a I30 Diesel CW 2009.
Have had this problem for a couple of days now. ESP came on about the same time, but I don't know if it's related?

Googled around and seems most problems is on grounds of break light switch. After testing fuse ok, I took it out and tested according to this video:  :link: HOW TO TEST YOUR HYUNDAI BRAKE LIGHT SWITCH - YouTube (http://www.youtube.com/watch?v=hyElmrHiFPw) - It seems to me that pin 1 and 2 and again 3 and 4 is giving a readout when switch is pushed in the video?  When testing mine,  1 and 2 reacts when pushed, but 3 and 4 gives readout as soon as I connect my multimeter and turns OFF when switch is activated? So not only is it different from the video, pin 1+2 and 3+4 works completely opposite  each other? Should I consider this defective?
I don't know where you are but has it even been replaced by Hyundai free of charge? Over here in Australia they have a campaign to replace these free with an updated switch regardless of age of the vehicle.

So maybe if you are here and it has not then visit a dealer . based on what you say I'd just replace it. ESP and no brake lights working safe bet it's the switch and like I said faulty or not there was a service campaign to swap these devils out. I will have to look at the manual now for techo info.
Title: Re: Brake lights not working - testing brake light switch
Post by: Dazzler on July 31, 2018, 23:22:07
Welcome Litz.

Even if it was replaced under warranty it is possible they replaced it with the wrong version (this happened with a few as I think it was different if you had cruise control - or some other variation). So go and ask a dealer to check hyundai's records on your VIN number. 
Title: Re: Brake lights not working - testing brake light switch
Post by: Litz97 on August 01, 2018, 14:04:10
I am from Denmark  :) I will talk to the dealer about a possible warenty situation :) Thank you for your input, guys :)
Title: Re: Brake lights not working - testing brake light switch
Post by: beerman on August 02, 2018, 23:27:01
Even if it was replaced, I had another one go on the Wife's FD before I finally got a good one in there.
Title: Re: Brake lights not working - testing brake light switch
Post by: GaKu on August 03, 2018, 06:48:58
Check this

 :link: i30 | Serviceindkaldelser | Hyundai Danmark (https://www.hyundai.dk/service/hyundaiservice/serviceindkaldelser/i30)
Title: Re: Brake lights not working - testing brake light switch
Post by: nzenigma on August 04, 2018, 04:25:18
Hi Guys,

I own a I30 Diesel CW 2009.
Have had this problem for a couple of days now. ESP came on about the same time, but I don't know if it's related?

 So not only is it different from the video, pin 1+2 and 3+4 works completely opposite  each other? Should I consider this defective?

ESP and all brake light failure = SWITCH.  no need to comment just       REPLACE OR GET IT REPLACED
Title: Re: Brake lights not working - testing brake light switch
Post by: Litz97 on August 22, 2018, 11:34:18
My car was on the list for the break switch check. But waiting time at the dealer was a week and I needed the car for our family vacation, so I changed it myself. Worked like a charm. :) Thanks for the advice, guys
Title: Re: Brake lights not working - testing brake light switch
Post by: Dazzler on August 22, 2018, 11:35:13
My car was on the list for the break switch check. But waiting time at the dealer was a week and I needed the car for our family vacation, so I changed it myself. Worked like a charm. :) Thanks for the advice, guys

Awesome! Thanks for letting us know.  :victory:
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