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Hella 011178891 Rain Sensor
HELLA Rain Sensor for Buick Regal
The HELLA Rain Sensor helps automate key driving functions by detecting rain, light, solar load, and humidity. It supports automatic windshield wiper response, adaptive low beam headlight control, and climate control adjustments for a more consistent driving experience.
Built for select Buick Regal applications, this HELLA sensor is a direct-fit style solution for vehicles without lane assist. Part number 011178891 is specified with a clipped mounting design, a 3-pole connection, and a cable included in the assembly.
Key Features
- Detects rain, lighting, solar load, and humidity
- Adjusts windshield wiper speed based on rain intensity
- Supports automatic low beam headlight response to changing light conditions
- Clipped mounting type for the listed applications
- 3-pole electrical connection
- Includes cable
- For vehicles without lane assist
Detailed Product Overview
HELLA 011178891 is a rain and light sensor used in select Buick Regal models to manage automatic wiper and lighting functions. It also contributes to climate control behavior by monitoring humidity and solar load, helping the vehicle respond more precisely to changing weather and ambient conditions. This part is listed for 2017 Buick Regal, 2018-2020 Buick Regal Sportback, and 2018-2020 Buick Regal TourX.
This part cross-references 84138307 for the same application. If you are searching for a Buick Regal rain sensor, automatic headlight sensor, or windshield wiper rain sensor replacement, part number 011178891 is the reference to verify.
What This Sensor Helps Address
- Intermittent or non-responsive automatic windshield wipers
- Automatic headlights that do not react properly to changing light
- Humidity-related control issues tied to the sensor input
- Loss of rain-sensing function on the windshield
- Faults related to the rain and light sensor on Buick Regal models
Installation Notes and Tips
Confirm the vehicle is equipped for this sensor configuration before ordering. This HELLA rain sensor uses a clipped mounting style, a 3-pole connection, and is specified for vehicles without lane assist. Verify the original part number and vehicle equipment details against the listing for 2017 Buick Regal, 2018-2020 Buick Regal Sportback, and 2018-2020 Buick Regal TourX before installation.
Quality Assurance
HELLA is an established automotive electronics brand with OE-level application coverage across sensing and lighting systems. Part number 011178891 is built for the listed Buick Regal applications and is identified with direct interchange reference 84138307.
| Brand | Hella |
|---|---|
| Part Number | 011178891 |
| Position | Hella |
| Mounting Type | Clipped |
| Number of Poles | 3 |
| Supplementary Article/Info 2 | With cable |
| Vehicle Equipment | For vehicles without lane assist |
This part fits 7 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2020 | Buick | Regal Sportback | N/A | Sensor, rain and light, Windshield wipers sensitive to rain and Automatic headlights (except RPO UHX, Lane Keeping Assist); for Humidity sensor, RPO ASV) (for Rain sensor, RPO CE1) (for Headlights, automatic on / off with Tunnel detection, RPO TTW); Supplementary Article/Info 2: with cable; Vehicle Equipment: for vehicles without lane assist; Mounting Type: Clipped; Number of Poles: 3; Hella |
| 2020 | Buick | Regal TourX | N/A | ensor, rain and light, Windshield wipers sensitive to rain and Automatic headlights (except RPO UHX, Lane Keeping Assist; for Humidity sensor, RPO ASV) (for Rain sensor, RPO CE1) (for Headlights, automatic on / off with Tunnel detection, RPO TTW); Supplementary Article/Info 2: with cable; Vehicle Equipment: for vehicles without lane assist; Mounting Type: Clipped; Number of Poles: 3; Hella |
| 2019 | Buick | Regal Sportback | N/A | Sensor, rain and light, Windshield wipers sensitive to rain and Automatic headlights (except RPO UHX, Lane Keeping Assist); for Humidity sensor, RPO ASV) (for Rain sensor, RPO CE1) (for Headlights, automatic on / off with Tunnel detection, RPO TTW); Supplementary Article/Info 2: with cable; Vehicle Equipment: for vehicles without lane assist; Mounting Type: Clipped; Number of Poles: 3; Hella |
| 2019 | Buick | Regal TourX | N/A | ensor, rain and light, Windshield wipers sensitive to rain and Automatic headlights (except RPO UHX, Lane Keeping Assist; for Humidity sensor, RPO ASV) (for Rain sensor, RPO CE1) (for Headlights, automatic on / off with Tunnel detection, RPO TTW); Supplementary Article/Info 2: with cable; Vehicle Equipment: for vehicles without lane assist; Mounting Type: Clipped; Number of Poles: 3; Hella |
| 2018 | Buick | Regal Sportback | N/A | Sensor, rain and light, Windshield wipers sensitive to rain and Automatic headlights (except RPO UHX, Lane Keeping Assist); for Humidity sensor, RPO ASV) (for Rain sensor, RPO CE1) (for Headlights, automatic on / off with Tunnel detection, RPO TTW); Supplementary Article/Info 2: with cable; Vehicle Equipment: for vehicles without lane assist; Mounting Type: Clipped; Number of Poles: 3; Hella |
| 2018 | Buick | Regal TourX | N/A | ensor, rain and light, Windshield wipers sensitive to rain and Automatic headlights (except RPO UHX, Lane Keeping Assist; for Humidity sensor, RPO ASV) (for Rain sensor, RPO CE1) (for Headlights, automatic on / off with Tunnel detection, RPO TTW); Supplementary Article/Info 2: with cable; Vehicle Equipment: for vehicles without lane assist; Mounting Type: Clipped; Number of Poles: 3; Hella |
| 2017 | Buick | Regal | N/A | Sensor, rain and light, Windshield wipers sensitive to rain and Automatic headlights (except RPO UHX, Lane Keeping Assist); for Humidity sensor, RPO ASV) (for Rain sensor, RPO CE1) (for Headlights, automatic on / off with Tunnel detection, RPO TTW); Supplementary Article/Info 2: with cable; Vehicle Equipment: for vehicles without lane assist; Mounting Type: Clipped; Number of Poles: 3; Hella |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.