# 3848966 Control Unit | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta Auxiliary Dimmer Unit (ADU) from the Instruments group, supplied as a kit, weighing 0.234 kg and listed for 398 applications across the D-series and V-series ranges. It makes it possible to dim all the EVC instruments at once from the EVC main panel. It supersedes part number 3840418, which was catalogued earlier as a control unit.

## 🚤 Compatibility

-   **Engine Family:** D, V
-   **HP Range:** 13-480 HP

Full model list at the end of this description.

## ⚙️ Key Features

-   Dims all EVC instruments from the EVC main panel
-   Supplied as an Auxiliary Dimmer Unit kit
-   0.234 kg
-   Supersedes 3840418, catalogued earlier as a control unit
-   398 applications across the D-series and V-series ranges
-   Fits: Volvo Penta EVC instrument installations

## 📋 Kit Contents

-   AUXILIARY DIMMER UNIT KIT

## 🔌 Function

Lets the EVC main panel control the brightness of every EVC instrument on the helm, so the whole panel can be dimmed together for night running.

## ⚠️ Common Signs of Failure

-   Panel lighting stuck at one brightness or dead altogether
-   Dimming steps jumping, flickering or working over only part of the range
-   Lighting comes up bright then fades out
-   Unit warm to the touch, or a smell of hot electronics behind the panel
-   Corroded connector or a poor earth at the unit

## 🛠️ Service Notes

-   It dims the EVC instruments through the EVC main panel, so prove the main panel's dimming function before condemning the unit
-   Isolate the batteries before working behind the instrument panel, and check the earth and the panel lamp loads first
-   The number it replaces was listed as a control unit, so the earlier and current descriptions differ — order by the current number
-   Works with the EVC instrument range, which is fully backlit

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   3848966 → Supersedes 3840418

### OEM / Related Numbers

-   3840418 earlier number superseded by this part

## 📦 Condition

-   Genuine Volvo Penta part
-   Brand new
-   Supplied in original or equivalent packaging

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D6-370A-C, D6-350A-A, D6-350A-B, D6-330A-D, D6-330D-E, D6-370D-E, D6-370D-B, D6-330D-B, D6-330A-F, D6-370A-F, D6-370D-A, D6-330D-C, D6-330A-C, D6-370D-C, D6-330D-D, D6-370D-D, D6-330D-F, D6-370A-D, D6-330A-E, D6-370A-E, D6-370D-F, D6-330I-D, D6-310I-B, D6-280I-B, D6-280I-C, D6-280I-D, D6-280I-E, D6-310I-D, D6-435I-D, D6-310I-E, D6-280I-A, D6-310I-A, D6-300A-F, D6-300D-F, D6-300I-F, D6-310D-A, D6-310D-B, D6-310D-D, D6-310D-C, D6-310D-E, D6-370I-A, D6-370I-B, D6-330I-B, D6-330I-C, D6-370I-C, D6-370I-D, D6-310A-B, D6-280A-C, D6-310A-C, D6-310A-A, D6-280A-D, D6-310A-D, D6-280A-E, D6-310A-E, D6-310I-C, D6-280A-A, D6-280A-B, D6-340I-G, D6-380I-G, D6-440I-G, D6-480I-G, D6-300A-G, D6-340A-G, D6-380A-G, D6-440I-WJ-G, D6-480I-WJ-G, D6-300D-G, D6-340D-G, D6-380D-G, D6-440D-G, D6-480D-G, D6-400A-G, D6-440A-G, D6-300I-G, D6-330I-F, D6-370I-F, D6-400A-E, D6-435D-A, D6-435D-D, D6-435D-E, D6-435D-F, D6-435I-A, D6-435I-C, D6-435I-E, D6-400A-F, D6-435D-C, D6-435I-F, D6-330I-E, D6-370I-E, D6-330A-B, D6-370A-B
-   Volvo Penta D4-260A-B, D4-260A-A, D4-260A-C, D4-260A-D, D4-260A-E, D4-260A-F, D4-260D-B, D4-260D-C, D4-260D-D, D4-260D-E, D4-260D-F, D4-260I-A, D4-260I-B, D4-260I-C, D4-260I-D, D4-260I-E, D4-260I-F, D4-300A-A, D4-300A-C, D4-300A-D, D4-300A-E, D4-300A-F, D4-300D-A, D4-300D-C, D4-300D-D, D4-300D-E, D4-300D-F, D4-300I-A, D4-180I-C, D4-225I-C, D4-180I-D, D4-225I-D, D4-180I-E, D4-225I-E, D4-180I-F, D4-225I-F, D4-210A-A, D4-210A-B, D4-225A-B, D4-225A-C, D4-225A-D, D4-300I-C, D4-300I-D, D4-300I-E, D4-300I-F, D4-225A-E, D4-225A-F, D4-210I-A, D4-210I-B, D4-180I-B, D4-225I-B, D4-175I-G, D4-230I-G, D4-270I-G, D4-320I-G, D4-300I-G, D4-150A-G, D4-230A-G, D4-270A-G, D4-320A-G, D4-300A-G, D4-145I-G
-   Volvo Penta D3-220I-G, D3-140A-D, D3-170A-D, D3-200A-D, D3-220A-D, D3-140I-D, D3-140A-E, D3-170A-E, D3-200A-E, D3-220A-E, D3-140I-E, D3-140A-F, D3-170A-F, D3-200A-F, D3-220A-F, D3-140I-F, D3-140A-G, D3-170A-G, D3-200A-G, D3-220A-G, D3-140I-G, D3-110I-D, D3-150I-D, D3-170I-D, D3-200I-D, D3-220I-D, D3-110I-E, D3-150I-E, D3-170I-E, D3-200I-E, D3-220I-E, D3-110I-F, D3-150I-F, D3-170I-F, D3-200I-F, D3-220I-F, D3-110I-G, D3-150I-G, D3-170I-G, D3-200I-G, D3-110I-H, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H, D3-150I-H, D3-170I-H, D3-200I-H, D3-220I-H, D3-140I-H
-   Volvo Penta V6-200-N, V6-200-C-N, V6-200-CE-N, V6-240-M, V6-240-C-M, V6-240-CE-M, V6-280-M, V6-280-C-M, V6-280-CE-M, V6-280-J, V6-280-CE-J, V6-280-G, V6-280-C-G, V6-280-CE-G, V6-280-C-J, V6-240-N, V6-240-C-N, V6-240-CE-N, V6-280-N, V6-280-C-N, V6-240-CE-K, V6-280-CE-K, V6-200-P, V6-200-C-P, V6-200-CE-P, V6-250-P, V6-250-C-P, V6-250-CE-P, V6-280-P, V6-280-C-P, V6-280-CE-P, V6-200-C-G, V6-200-G, V6-200-J, V6-200-C-J, V6-225-E-A, V6-280-CE-N, V6-200-M, V6-200-C-M, V6-250-O, V6-250-C-O, V6-250-CE-O, V6-240-C-G, V6-240-CE-G, V6-240-G, V6-240-J, V6-240-CE-J, V6-240-C-J, V6-250-CE-R, V6-280-CE-R
-   Volvo Penta V8-350-CE-R, V8-380-CE-R, V8-300-CE-M, V8-350-CE-M, V8-300-CE-N, V8-350-CE-N, V8-380-CE-M, V8-270-CE-B, V8-300-E-A, V8-300-E-B, V8-300-CE-A, V8-320-CE-B, V8-300-CE-B, V8-320-E-A, V8-320-E-B, V8-320-CE-A, V8-380-CE-A, V8-380-CE-B, V8-380-CE-D, V8-430-CE-D, V8-350-CE-D, V8-380-CE-J, V8-430-CE-J, V8-350-CE-H, V8-350-CE-J, V8-300-CE-R, V8-430-CE-R, V8-430-CE-M, V8-300-CE-K, V8-350-CE-K, V8-380-CE-K, V8-430-CE-K, V8-300-CE-P, V8-350-CE-P, V8-380-CE-P, V8-300-CE-G, V8-300-CE-H, V8-300-CE-J, V8-350-CE-G, V8-225-CE-A, V8-225-CE-B, V8-270-E-A, V8-270-E-B, V8-270-CE-A, V8-380-CE-N, V8-430-CE-N, V8-430-CE-P, V8-300-CE-S, V8-350-CE-S, V8-400-CE-R
-   Volvo Penta D13C3-B MH, D13C1-B MH, D13C4-B MH, D13C2-B MP, D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-A MP, D13B-C MH, D13B-H MP, D13B-G MP, D13B-L MP, D13B-E MG, D13B-E MG (FE), D13B-E MH, D13B-E MH (FE), D13B-F MG, D13B-F MG (FE), D13B-K MP, D13B-N MH, D13B-N MH (FE), D13B-B MP, D13B-D MP, D13B-J MP, D13B-M MP, D13B-C MP, D13C4-B MP, D13C5-B MP, D13C6-A MP, D13C1-A MH, D13C3-B MG, D13C1-B MG, D13C4-B MG, D13C2-B MG, D13C5-A MP, D13C2-A MG, D13C1-A MG
-   Volvo Penta 5.7GXiE-320-R, 5.7GXiCE-320-R, 5.7GXiCE-P, 5.7GXiE-P, 5.7GiE-300-P, 5.7GiE-300-R, 5.7GiCE-300-P, 5.7GiCE-300-R, 5.0GiCE-225-S, 5.0GXiCE-P, 5.0GXiE-270-R, 5.0GXiCE-270-R, 5.0GXiE-P, 4.3GXiE-225-R, 4.3GXiE-P, 4.3GXiE-Q, 4.3GXiE-225-S
-   Volvo Penta D2-40, D2-40B, D2-40F, D2-55, D2-55B, D2-55C, D2-55D, D2-55E, D2-55F, D2-50F, D2-75, D2-75B, D2-75C, D2-75F, D2-60F
-   Volvo Penta D1-30, D1-30B, D1-30F, D1-13, D1-13B, D1-13F, D1-20, D1-20B, D1-20F
-   Volvo Penta D11C1-A MP, D11C3-A MP, D11C2-A MP, D11C4-A MP, D11B3-A MP, D11B4-A MP, D11B2-A MP, D11B1-A MP
-   Volvo Penta D8A2-A MP, D8A5-A MH, D8A6-A MH, D8A5-A MG, D8A6-A MG, D8A4-A MP, D8A1-A MP, D8A3-A MP

## Details

- **Price:** 644.01 AUD
- **Vendor:** Volvo Penta
- **Type:** Instruments & Gauges
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 644.01 AUD | In stock |

## Images

- 3848966 Control Unit | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3848966-control-unit-genuine-volvo-penta)
> Updated: 2026-09-19