Is it dangerous to drive with a faulty light sensor?

Not critical if you remember to activate headlights manually, but relying on a faulty sensor risks driving with lights off in conditions where they’re needed — repair promptly and use manual control in the meantime.

Can this sensor be cleaned instead of replaced?

In some cases dust buildup can affect sensitivity, and cleaning may help, but a genuinely failed sensing element needs replacement.

What is the sensor made of?

A photodiode or phototransistor sensing element in a compact housing.

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 sensor FORD MONDEO 2007

Name: Light sensor FORD MONDEO 2007
Brand: FORD
SKU: 194997474
Price: 13.50 EUR
Availability: InStock

OEM: 194997474

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?

The light sensor detects ambient light levels, automatically activating headlights when it gets dark (auto headlight function) without driver input.

Ask a question

Not sure about compatibility? Send us your car's VIN and we'll confirm.

Ask about this product

Signs of a faulty part

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

Headlights don’t turn on automatically in low light
Headlights stay on constantly regardless of light level
Inconsistent automatic activation

Installation information

Mounted on the dashboard or near the windscreen, connecting to the vehicle wiring harness.

Donor vehicle description

VIN: WF0EXXGBBE7P03951
Make, model: Ford Mondeo
Year: 2007
Engine: 2.3L Duratec-HE (160PS) - MI4
Transmission: 6-pārnesumu Automatiska. -AWF21
Drive: Priekšēja
: Stūre kreisajā pusē
Colour: Thunder Metallic

258 parts from this car

Frequently asked questions

Reliable automatic headlight activation ensures your vehicle is visible to others as light conditions change, particularly important during dusk or sudden weather changes like entering a tunnel.

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.
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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!
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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.
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Igors K.
Front fender
October 2025