In autumn and winter the daylight in Latvia shrinks to a minimum, while frequent rain, wet snow and fog make driving on unlit Latgale roads a test for your eyes. Many drivers of cars over 10 years old (the average fleet age in the country is about 14 years) suffer from dim factory halogen light.
The wish to fit modern LED bulbs instead of halogen is logical, but until recently any such upgrade meant a fail at the inspection. CSDD examiners classified fitting non-certified LEDs into halogen headlights as an unauthorised modification of the lighting equipment (defect code 4.1.2) - which led straight to a grade "2" (būtisks trūkums), or even "3" (bīstams bojājums) if the headlights dazzled oncoming drivers. But with the arrival of officially certified LED ranges the situation has changed. Let's look at how to switch to LED legally and pass the CSDD optics check without trouble. This article complements our technical inspection (TA) preparation checklist.
The legal breakthrough: what makes LED bulbs legal
The turning point came after leading lighting makers (above all OSRAM) ran independent tests with TÜV-Süd and obtained approval from Germany's Federal Motor Transport Authority (KBA) for the use of LEDs in factory halogen headlights of specific car models.
Since Latvia adopts the European technical-supervision directives, CSDD has officially allowed the use of cars with LED bulbs - but only with strict compliance with the type-approval rules (ECE approval marking / ABG certificate) and with supporting documents.
Halogen, cheap Chinese LED and certified LED
| Property | Halogen (factory) | Certified LED (Osram/Philips) | Cheap Chinese LED |
|---|---|---|---|
| Brightness | 100% (baseline) | up to +220% / +230% | up to +300% (uncontrolled beam) |
| Service life | ~500-1000 hours | several times longer than halogen | degrades quickly |
| Cut-off line | sharp | perfect, no glare | blurred, dazzles oncoming traffic |
| CSDD check | passes | legal (with an ABG certificate) | fail (grade "2" or "3") |
| Documents | none | required (ABG / E-mark) | impossible to legalise |
Step by step: how to legally fit H4/H7 LED bulbs
Step 1. Check the headlight approval number
The legality of certified LEDs is tied to the specific headlight design, not just the car model.
- Open the bonnet.
- Find the marking on the headlight body or lens: an "E" symbol with one or two digits in a circle and a 4-5 digit code (for example E1 21045).
- Open the compatibility list on the maker's site (Osram Night Breaker LED Compatibility List) and check whether your headlight code is among the approved ones.
Step 2. Buy a genuine certified kit
Use only genuine kits. The retail price of an Osram Night Breaker LED set in Latvia is around €125.
- Beware of fakes: the genuine box has an OSRAM Trust sticker with a QR code and a unique cipher. Verify authenticity through the maker's online verification.
- Accessories: the compatibility list may state you need adapters, larger rubber headlight caps or electronic Canbus emulators to clear on-board computer errors.
Step 3. Fit the bulbs in pairs
Low and high beam bulbs are changed only in pairs. Modern LEDs (for example Osram LED Gen 2) are geometrically close to halogen and fit plug-and-play. When changing sidelights to W5W-LED series diodes, also make sure they are certified.
Step 4. Download and print the ABG certificate (critically important!)
This is the main document that protects you from objections by the police and CSDD examiners.
- Scan the QR code on the bulb packaging.
- Complete verification on the maker's site, enter the security code and download the ABG (Allgemeine Bauartgenehmigung) PDF certificate.
- Print the document. The main (introductory) part and the appendix page (1. papildinājums) with your car model and headlight approval number are enough. Keep the printout in the glovebox.
When you enter the security code for Latvia, the Osram/Philips site usually generates a document that, besides the German text, includes an international extract. What matters most to a CSDD examiner is the fact that the approval number on the headlight matches the number in the certificate's official appendix.
Secrets of passing the light check at a CSDD station
Even with expensive genuine bulbs and a printed ABG, the examiner can give a "2" if the beam is set wrong.
- Beam direction. The examiner assesses the cut-off line on a beam setter. The vertical tilt of the low beam must match the car maker's specification (the basic setting is usually around 1.0-1.5% downward; the exact value is marked on the headlight or in the service documentation).
- Tip before the inspection. Right after fitting LEDs, adjust the headlights on an optical beam setter. Any shift of the light spot due to Latgale's potholes and uneven roads will dazzle oncoming traffic and fail the inspection.
Prepare the optics before the upgrade
LEDs shine more intensely than halogen. If your headlight lens has gone cloudy, cracked with micro-cracks or sandblasted, the powerful flow will refract incorrectly, creating stray glare and dazzling others. Before switching to LED we recommend a proper headlight restoration and protecting the surface with a suitable clearcoat.
Bottom line
Legal LED light in Latvia in 2026 is a reality, but with conditions: the bulbs must be certified (ECE mark or ABG), the headlight must be on the compatibility list, the ABG document must be printed and in the glovebox, and the beam must be adjusted on a beam setter. Then the CSDD inspection goes smoothly.
This article is based on CSDD (csdd.lv) requirements for lighting equipment, ECE type-approval rules and the manufacturers' (Osram, Philips) certification conditions. Check the list of compatible headlights and current requirements in the manufacturer's compatibility list and at a technical inspection station.