GB11555-2025

Technical specification for demisting and defrosting systems of motor vehicles-windshield

汽车风窗玻璃除霜和除雾系统技术规范

GB 11555-2025 est une norme nationale chinoise obligatoire en vigueur : Technical specification for demisting and defrosting systems of motor vehicles-windshield. Secteur : Électronique. Thème principal : Sécurité des produits. Entrée en vigueur : 1 janv. 2026.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

Cet aperçu n’est actuellement disponible qu’en anglais.

Champ d’application

This standard specifies the technical requirements for windshield defrosting and demisting systems on M1 category vehicles (passenger cars). It is mandatory for the design, manufacturing, and acceptance of these systems in the Chinese market. The standard does not apply to commercial vehicles outside the M1 classification or rear window defoggers.

Exigences techniques

The standard defines specific test areas on the windshield, designated as Area A, Area A', and Area B, which are determined based on the V points and R points of the vehicle's forward visibility. For the defrosting system, the standard mandates that vehicles must be equipped with a system capable of restoring visibility in cold weather. Manufacturers must ensure that a specific percentage of the defined areas is cleared of frost within designated time limits during testing. Regarding the demisting system, vehicles must feature a system to clear condensation from the interior surface. The system must demonstrate the ability to restore visibility in the critical areas within a strict timeframe under humid conditions. The standard also introduces criteria for same-type evaluation (type approval extension) based on heating power and system layout. New vehicle type approvals must comply with this standard starting from its implementation date, while existing approved models have a 13-month grace period.

Méthodes d’essai

The standard outlines two primary testing procedures: the defrosting test and the demisting test. The defrosting test is conducted in a cold chamber at a specified sub-zero temperature, utilizing a spray gun to create an ice layer on the exterior windshield, followed by measuring the cleared area over time. The demisting test uses a specialized steam generator inside the vehicle at a different cold temperature setting to simulate interior condensation, evaluating the system's clearing efficiency. Both tests require precise environmental controls and specific equipment configurations to ensure compliance.

Questions fréquentes

What products are regulated under GB 11555-2025?

GB 11555-2025 regulates the windshield defrosting and demisting systems specifically for M1 category vehicles, which primarily include passenger cars.

Are there any updates from the previous version of GB 11555?

Yes, compared to GB 11555-2009, this version updates the definitions of V points and R points, modifies test conditions and equipment requirements, and adds new chapters for same-type evaluation and standard implementation rules. Manufacturers must review these changes to maintain compliance.

When does GB 11555-2025 take effect?

The standard will be implemented on January 1, 2026. New type approvals must comply immediately upon implementation, while previously approved models have a 13-month transition period.

The summary above provides a high-level overview of GB 11555-2025. To ensure complete compliance for your vehicles entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 11555-2025 today to access all detailed parameters, test area diagrams, and procedural tables.

Indications d’applicabilité

Type: Sécurité
CCS: T26
ICS: 43.040.60
Autorité compétente: Ministry of Industry and Information Technology
Comité technique: National Technical Committee on Automobiles of Standardization Administration of China

Relations

Remplace:GB 11555-2009