Is it dangerous to drive with this control faulty?

Not critical for safety unless the dashboard is stuck too dim to read or too bright and causing glare at night — address if it affects your ability to read the instruments.

Can this control be repaired instead of replaced?

For a worn internal contact, replacement is usually more straightforward than attempting a repair.

What is the control made of?

Plastic with an internal rotary potentiometer or electronic control mechanism.

What is this part and what does it do?

Full description available in the product description section above. Contact us with clarifying questions.

How do I tell if my part is faulty?

See the 'Signs of a faulty part' section above or run a diagnostic at an auto service.

Yes - all our used parts are tested before sale and sold with guaranteed quality.

When should the part be replaced?

When warning signals appear, diagnostic codes are present, or the system malfunctions.

Light brightness adjustment button MAZDA 3 2007

Name: Light brightness adjustment button MAZDA 3 2007
Brand: MAZDA
SKU: BP4K666R0
Price: 9.00 EUR
Availability: InStock

OEM: BP4K666R0

Disassembled car photo

Engine running

Tested before shipping
Guaranteed quality
Fast delivery 3–7 days
14-day returns

What is this part and why does it matter?

This button or dial adjusts the brightness of the instrument panel and interior lighting, useful for reducing glare at night.

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Not sure about compatibility? Send us a question with your car's make, model and year.

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Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

Brightness doesn’t change when adjusted
Control feels loose or sticky
Lighting flickers or jumps between brightness levels erratically

Installation information

Clips into the dashboard, connecting to the vehicle wiring harness — check the full brightness range functions correctly after installation.

Donor vehicle description

VIN: JMZBK14Y271585178
Make, model: MAZDA 3
Year: 2006
Engine: 1.6 Petrol 80KW
Transmission: Manual 5-speed
Drive: Front
Colour: 32C PHANTOM BLUE MICA

206 parts from this car

Frequently asked questions

Most commonly a worn internal contact or potentiometer within the control itself, from years of repeated use.

What our customers say

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Price: affordable. Service: electrical equipment repair.
A
Andris B.
September 2026
Price: excellent.
D
Didier V.
August 2026
Super good! They came through with the part I needed, quickly and at a fair price! Thanks, and I definitely recommend!
I
Ilmars K.
August 2026
I ordered a Heater Blower Motor Resistor for a Toyota Avensis. Delivery took eight days from Latvia to Ireland. I installed it, and everything works perfectly. I wish this company success.
A
Aleksandr L.
Toyota Avensis
August 2026
No complaints about Evro Trans itself, everything's fine. But the delivery..... It felt like the order was being carried by turtles. 4 days from Riga to Daugavpils. Judging by the tracking, the parcel just sat somewhere behind a shed for 3 days, then they found it and delivered it the next day. I think that's why I won't be ordering there again.
P
Paul F.
June 2026
Super fast delivery of the part, and good quality of the used part. Thanks for the service.
N
Natālija I.
May 2026
I ordered antifreeze heaters and an auxiliary pump. Everything arrived quickly, the very next day, and matched the description. I'm satisfied.
J
Juris J.
February 2026
Excellent service, timely delivery, and complete transparency at every step. I highly recommend EvroTrans to anyone looking for a reliable partner!
E
Egor S.
November 2025
Bought a front fender for my car. I liked it! After payment they sent more than 20 photos of the problem areas, and it was packed very securely - took a while to unwrap.
I
Igors K.
Front fender
October 2025