Faulty brake switch (16955)

Bodge · 22-04-2008, 15:56

Did a scan for error codes last night to see if the old 17705 had gone away after changing a pipe (it hadn't!), but also picked up a new code - 16955 Brake Switch (F): Implausable Signal: P0571.

I immediately did a search on here, and discovered that my brake light switch on the pedal might be playing up. The lights are working fine though, which is odd. I think it may be due to the switch being operated beyond it's normal conditions and picking up some dirt. As I got the ABS working a few times on the Nurburgring last week, which made the pedal drop lower than normal. I also changed the pads, and pumped the pedal to the floor when i pushed the pistons back out. So I recon I might have injured the switch doing this. Anyway, I've deleted the code and will see if it's back in a week.

Anyone know what the part number is for the new switch? ('02 vRS hatch)

And roughly how much one will cost from Skoda?

Looks like an easy job, so if it's cheap i'll just change it anyway to be on the safe side.

AwesomeSarah · 22-04-2008, 16:23

1C0 945 511A
New part number
Sarah

Bodge · 23-04-2008, 19:15

cheers sarah

**VRStu** · 23-04-2008, 21:36

The switch is double action as in it operates the Brake Lights as well as a Signal to the ECU.

Bodge · 23-04-2008, 23:04

ahh that makes sense then. so the light activation part may be working fine, but the ecu sending end could be faulty.

hadnt thought of that!

**VRStu** · 23-04-2008, 23:10

Quote:

Originally Posted by Bodge

ahh that makes sense then. so the light activation part may be working fine, but the ecu sending end could be faulty.

hadnt thought of that!

Bingo

Bodge · 29-04-2008, 18:23

Just fitted the new part, which was green rather than the original black one, plus alot bigger than the original.

Old part number was 1J0 945 511C.

Possibly the easiest job ever. All it takes is removing 2 torx screws to lift out the under dash panel, then your right in there. Connector comes off easily by squeezing the side tabs, and the switch just turns and pulls out.

Found a panel of relays in there aswell. Good to know! Never realised there was a switch/position sensor on the clutch pedal aswell.

Here's a photo of the offending old switch on the pedal (the black thingy in the middle of the photo!):

AwesomeSarah · 30-04-2008, 09:28

Wow , nice pic
Looks scarey though eh?
Sarah

22-04-2008, 15:56	#1
Bodge Briskodian Join Date: Sep 2007 Location: England Posts: 668 Thanks: 94 Thanked 56 Times in 53 Posts	Faulty brake switch (16955) Did a scan for error codes last night to see if the old 17705 had gone away after changing a pipe (it hadn't!), but also picked up a new code - 16955 Brake Switch (F): Implausable Signal: P0571. I immediately did a search on here, and discovered that my brake light switch on the pedal might be playing up. The lights are working fine though, which is odd. I think it may be due to the switch being operated beyond it's normal conditions and picking up some dirt. As I got the ABS working a few times on the Nurburgring last week, which made the pedal drop lower than normal. I also changed the pads, and pumped the pedal to the floor when i pushed the pistons back out. So I recon I might have injured the switch doing this. Anyway, I've deleted the code and will see if it's back in a week. Anyone know what the part number is for the new switch? ('02 vRS hatch) And roughly how much one will cost from Skoda? Looks like an easy job, so if it's cheap i'll just change it anyway to be on the safe side.

22-04-2008, 16:23	#2
AwesomeSarah Site Sponsor Join Date: Mar 2006 Posts: 3,723 Thanks: 34 Thanked 166 Times in 147 Posts	Re: Faulty brake switch (16955) 1C0 945 511A New part number Sarah

23-04-2008, 19:15	#3
Bodge Briskodian Join Date: Sep 2007 Location: England Posts: 668 Thanks: 94 Thanked 56 Times in 53 Posts	Re: Faulty brake switch (16955) cheers sarah

23-04-2008, 21:36	#4
VRStu Briskoda Staff Join Date: Dec 2004 Location: Hampshire Posts: 20,450 Thanks: 116 Thanked 926 Times in 830 Posts	Re: Faulty brake switch (16955) The switch is double action as in it operates the Brake Lights as well as a Signal to the ECU. __________________ Stu - Freedom Pimp Stu's Websites - http://www.fabia-vrs.com & http://www.octavia-vrs.com Buy My Octy for £11k - http://briskoda.net/items-sale/oct-07-57-octy-ii-vrs-hatch-2-0-tfsi-11k/125614/ Stu's Car - 2008 Audi S3 - Ibis White, Black Optics Pack, Privacy Glass, Auto Bi Xenon Headlights, Rain Sensing Wipers, Bose Sound System, Ipod Prep, GSM Phone Prep, Flat Bottom Multi Function Steering Wheel, Electric Folding Mirrors, Acoustic Parking, Cruise Control, Non Smokers Pack. SWMBO's Car - 2008 Seat LEON TDi Stylance, Black Magic, Sports Pack, Rear Parking Sensors. Something for Weekend - A Patio

23-04-2008, 23:04	#5
Bodge Briskodian Join Date: Sep 2007 Location: England Posts: 668 Thanks: 94 Thanked 56 Times in 53 Posts	Re: Faulty brake switch (16955) ahh that makes sense then. so the light activation part may be working fine, but the ecu sending end could be faulty. hadnt thought of that!

29-04-2008, 18:23	#7
Bodge Briskodian Join Date: Sep 2007 Location: England Posts: 668 Thanks: 94 Thanked 56 Times in 53 Posts	Re: Faulty brake switch (16955) Just fitted the new part, which was green rather than the original black one, plus alot bigger than the original. Old part number was 1J0 945 511C. Possibly the easiest job ever. All it takes is removing 2 torx screws to lift out the under dash panel, then your right in there. Connector comes off easily by squeezing the side tabs, and the switch just turns and pulls out. Found a panel of relays in there aswell. Good to know! Never realised there was a switch/position sensor on the clutch pedal aswell. Here's a photo of the offending old switch on the pedal (the black thingy in the middle of the photo!):

30-04-2008, 09:28	#8
AwesomeSarah Site Sponsor Join Date: Mar 2006 Posts: 3,723 Thanks: 34 Thanked 166 Times in 147 Posts	Re: Faulty brake switch (16955) Wow , nice pic Looks scarey though eh? Sarah

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