The 1K09555559AH rain sensor is an intelligent optical detection unit built for automatic windshield wiper control in modern vehicles. Installed behind the windshield near the rearview mirror, it uses infrared reflection technology to monitor rainfall intensity in real time and adjust wiper speed automatically. This improves driving safety and comfort during rainy or snowy weather. As a precision-engineered OE replacement part, it is compatible with a wide range of Volkswagen Group models, including Audi, Škoda, and SEAT vehicles.
Technical Specifications
|
Item |
Specification |
|
Product Model |
1K0955559AH |
|
Special Features |
With sensor bracket |
|
Item Weight |
0.1 kg |
|
Item Height |
1.0 cm |
|
Item Width |
6.0 cm |
|
Item Length |
7.30 cm |
|
Applicable Systems |
Automatic wiper control, automatic headlights |
|
Detection Principle |
Infrared reflection (optical) |
|
Operating Voltage |
12V DC |
|
Operating Temperature |
-40℃ ~ +85℃ |
|
Communication Protocol |
LIN / CAN (vehicle-dependent) |
|
Mounting Type |
Adhesive pad + mechanical clip (OE-style) |
Compatible Vehicle Models
|
VOLKSWAGEN |
BEETLE |
2012-2019 |
|
VOLKSWAGEN |
CC |
2009-2012 |
|
VOLKSWAGEN |
EOS |
2007-2016 |
|
VOLKSWAGEN |
GOLF |
2006-2013 |
|
VOLKSWAGEN |
GOLF CITY |
2009-2010 |
|
VOLKSWAGEN |
GTI |
2006-2013 |
|
VOLKSWAGEN |
JETTA |
2005-2016 |
|
VOLKSWAGEN |
JETTA CITY |
2009 |
|
VOLKSWAGEN |
PASSAT |
2006-2015 |
|
VOLKSWAGEN |
PASSAT CC |
2009-2012 |
|
VOLKSWAGEN |
R32 |
2008 |
|
VOLKSWAGEN |
RABBIT |
2006-2009 |
|
VOLKSWAGEN |
TIGUAN |
2009-2018 |
|
VOLKSWAGEN |
TIGUAN LIMITED |
2018 |
|
VOLKSWAGEN |
TOUAREG |
2004-2010 |
✅ Note: Fully compatible with vehicles equipped with automatic headlights and rain-sensing wipers as factory options.
Structural Composition
| Optical Module | Contains dual infrared emitters and receivers sealed within a transparent lens window, calibrated for accurate rain detection across varying light conditions. |
| Control PCB | Embedded microcontroller processes sensor signals and outputs wiper commands via standardized vehicle interface. |
| Mounting Bracket | Integrated plastic housing with OEM-matching geometry and retention clips for secure attachment to the windshield's black frit area. |
| Electrical Connector | 6-pin or 8-pin gray automotive connector (depending on variant) with tin-plated terminals for corrosion resistance and reliable signal integrity. |
| Thermal Management Layer | Internal thermal pad dissipates heat from electronics, preventing overheating during prolonged operation. |
Installation and Usage Notes
Ensure the windshield area behind the rearview mirror is clean, dry, and free of cracks or aftermarket tinting, as these can interfere with optical performance.
Align the sensor precisely with the OE mounting position using the reference marks on the adhesive pad; improper placement may cause false triggers or no response.
After installation, clear any fault codes using a diagnostic tool (e.g., VCDS, Autel, or Launch) and perform a system calibration if required by the vehicle.
Do not use alcohol-based cleaners directly on the sensor lens-use only mild soapy water and a microfiber cloth.
If replacing due to ADAS-related issues (e.g., lane assist malfunction), verify that the new sensor supports camera fusion functionality (applicable to certain 5Q0/8U0 variants).
Key Features
OEM Direct Fit
Engineered to match original equipment specifications under part number 1K0955559AH. It integrates perfectly with the vehicle's windshield curvature, mounting bracket, and CAN bus system, with no modifications or extra adapters needed.
01
Advanced Optical Sensing
Built with infrared LEDs and a photodiode array to detect water density on the windshield. It supports multi-level sensitivity adjustment through vehicle settings, performing reliably from light drizzle to heavy downpours.
02
Strong Environmental Durability
Housed in UV-resistant, high-clarity optical resin with anti-fog and anti-condensation coating. It maintains stable performance in temperatures ranging from -40℃ to +85℃ without signal drift or lens damage.
03
Stable Communication Interface
Supports LIN or CAN bus protocols (depending on the vehicle platform) for consistent data transmission with the body control module (BCM). It can also work alongside automatic headlights and ADAS systems.
04
Strict Quality Control
Produced in line with IATF 16949 automotive quality standards. Every unit is fully tested with rain simulation, temperature cycling, and electromagnetic compatibility (EMC) checks before shipping.
05
Company Profile
Main Business
FAQ
Q: Who are we?
A: We are based in Shanghai, China, start from 2004,sell to Domestic Market(55.00%),North America(10.00%),Central
America(10.00%),South America(7.00%),Eastern Europe(4.00%),Mid East(4.00%),Western Europe(4.00%),Southeast Asia(2.00%),Eastern
Asia(1.00%),Southern Europe(1.00%),Northern Europe(1.00%),Africa(1.00%). There are total about 1000+ people in our office.
Q: How can we guarantee quality?
A: Always a pre-production sample before mass production;
Always final Inspection before shipment;
Q: What can you buy from us?
A: Auto Electrical Systems,Auto Engine Systems,Auto Steering Systems,Auto Suspension Systems,Auto Transmission Systems
Q: Why should you buy from us not from other suppliers?
A: Changhui group has over 4 0 years' experience in manufacturing auto electrics & electronics, has QC and OEM service capability. 40 years' industry professional accumulation made it to be automotive expert in auto electrics, electronics & EPS.
Q: What services can we provide?
A: Accepted Delivery Terms: FOB,CIF,DDP,DDU,Express Delivery;
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T,L/C,Western Union,Cash;
Language Spoken:English,Chinese,Spanish,German,French,Russian,Korean
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