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Retrofit and activate Formentor Windshield Washer Fluid Warning Light

spezwend

Active Member
Jun 23, 2023
71
36
Thanks to @witek_77 for the information: https://www.seatcupra.net/forums/threads/retrofit-washer-fluid-level-indicator.474960/post-5049770

What you need:
1. Plug 1J0973202 for washer fluid level sender (G33 on the diagram)
2. 2x 2 meters of 0,3...0,5mm2 wire
3. Tesa automotive PET cloth tape (51007)
4. One MQS female pin for T46B plug (for pin 28, pin 19 just attach to the wire already there)
5. Something for coding (obd11, Odis etc)
6. Tank already have built-in fluid level sensor.

You need to disconnect and take out the battery, remove the left front wheel, unscrew the front part of the wheel arch, unscrew the plastic under the steering wheel. Remove the middle plug (B) from the BCM (T46b), unplug it, connect the wires to pins 19 and 28, pull it through the rubber seal on engine firewall to the engine compartment, lead it somehow to the washer tank (I led it through the top and went down behind the lamp just like the original washer harness), and connect the plug.

Coding:
1. 09 central electrics (SFD locked)
2. Adaptations
3. [VO]_HW_verbau
4. insufficient washer fluid > change from "not installed" to "installed"

image00.jpg image01.jpg image02.jpg image03.jpg image04.jpg image05.jpg image06.jpg insufficent_washer_fluid_coding.png T-Roc_2017_wiring_diagram.jpg
 

Wyld Stallyn

Be Excellent To Each Other and... Party On Dudes!
Mar 10, 2022
420
267
Thanks to @witek_77 for the information: https://www.seatcupra.net/forums/threads/retrofit-washer-fluid-level-indicator.474960/post-5049770

What you need:
1. Plug 1J0973202 for washer fluid level sender (G33 on the diagram)
2. 2x 2 meters of 0,3...0,5mm2 wire
3. Tesa automotive PET cloth tape (51007)
4. One MQS female pin for T46B plug (for pin 28, pin 19 just attach to the wire already there)
5. Something for coding (obd11, Odis etc)
6. Tank already have built-in fluid level sensor.

You need to disconnect and take out the battery, remove the left front wheel, unscrew the front part of the wheel arch, unscrew the plastic under the steering wheel. Remove the middle plug (B) from the BCM (T46b), unplug it, connect the wires to pins 19 and 28, pull it through the rubber seal on engine firewall to the engine compartment, lead it somehow to the washer tank (I led it through the top and went down behind the lamp just like the original washer harness), and connect the plug.

Coding:
1. 09 central electrics (SFD locked)
2. Adaptations
3. [VO]_HW_verbau
4. insufficient washer fluid > change from "not installed" to "installed"

View attachment 42519 View attachment 42520 View attachment 42521 View attachment 42522 View attachment 42523 View attachment 42524 View attachment 42525 View attachment 42526 View attachment 42527
Brilliant work 😎

🤔 But why could CUPRA have already done this when access was easy, is beyond my comprehension. 🤯
 

spezwend

Active Member
Jun 23, 2023
71
36
Pre face lift models have reservoir with sensor but no wire and no plug. About the ugly face lift model I do not know. :)
 

ifa

Active Member
Jul 4, 2024
20
2
Estonia.
How is possible? o_O
Without

Washer Fluid Warning Light on NEW car ???!!!​

HOW?????
Safety? No , no, this is not for us !
Have you more better cupra , without airbags and safety belt?
I needed for my suicide's club .
(I am impressed)
 

tzuicomicina

Active Member
Feb 14, 2023
34
16
Pre face lift models have reservoir with sensor but no wire and no plug. About the ugly face lift model I do not know. :)
Thanks! Well, afaik the prefacelift model I have is MY2024. The dealer told me that the cabling and connector have been removed since MY2022.
 
Last edited:
Apr 8, 2024
17
1
Is this plug/cable missing from ALL Formentor’s or just certain markets/countries? (I’m in the UK) If so, this is cost cutting to the extreme, as I assumed it was already fitted
 

spezwend

Active Member
Jun 23, 2023
71
36
This is missing from all Formentors. Don't know about the facelift model yet... actually don't even care, never gonna buy it. :D
 
Apr 8, 2024
17
1
This is missing from all Formentors. Don't know about the facelift model yet... actually don't even care, never gonna buy it. :D
Thanks for the quick reply and info.
Still can’t believe they decided to no longer fit this cable, crazy cost cutting…
Your not a fan of the facelift model then 😳
 

spezwend

Active Member
Jun 23, 2023
71
36
Thanks for the quick reply and info.
Still can’t believe they decided to no longer fit this cable, crazy cost cutting…
Your not a fan of the facelift model then 😳
You do not need washer fluid in Spain I guess. Crazy of course, what's next, no low-fuel warning or a gauge at all? :D

I do not like the facelift model, It's like cheap Chinese EV. But new lights are okay.
 
Jul 25, 2022
9
0
Thanks to @witek_77 for the information: https://www.seatcupra.net/forums/threads/retrofit-washer-fluid-level-indicator.474960/post-5049770

What you need:
1. Plug 1J0973202 for washer fluid level sender (G33 on the diagram)
2. 2x 2 meters of 0,3...0,5mm2 wire
3. Tesa automotive PET cloth tape (51007)
4. One MQS female pin for T46B plug (for pin 28, pin 19 just attach to the wire already there)
5. Something for coding (obd11, Odis etc)
6. Tank already have built-in fluid level sensor.

You need to disconnect and take out the battery, remove the left front wheel, unscrew the front part of the wheel arch, unscrew the plastic under the steering wheel. Remove the middle plug (B) from the BCM (T46b), unplug it, connect the wires to pins 19 and 28, pull it through the rubber seal on engine firewall to the engine compartment, lead it somehow to the washer tank (I led it through the top and went down behind the lamp just like the original washer harness), and connect the plug.

Coding:
1. 09 central electrics (SFD locked)
2. Adaptations
3. [VO]_HW_verbau
4. insufficient washer fluid > change from "not installed" to "installed"

View attachment 42519 View attachment 42520 View attachment 42521 View attachment 42522 View attachment 42523 View attachment 42524 View attachment 42525 View attachment 42526 View attachment 42527
Hello! I want to do the same in my Leon, but before I start, I would like to ask you to help me with one thing that's not clear for me: where is located plug T46b, behind the fuse box? Thanks in advance. Robert
 

spezwend

Active Member
Jun 23, 2023
71
36
Hello! I want to do the same in my Leon, but before I start, I would like to ask you to help me with one thing that's not clear for me: where is located plug T46b, behind the fuse box? Thanks in advance. Robert
It's on the left side of the Body Control Module or fuse box, down from the A-pillar.
 
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