The most frequent question regarding eCall certification is whether to adopt the component path or full vehicle path. The two pathways differ drastically in testing procedures, certification issuance and compliance obligations; misselection at project initiation leads to full rework downstream. The biggest risk is not test failure, but wrong strategic pathway selection.
First, clarify your enterprise identity:Only two core stakeholders participate in eCall compliance: component suppliers manufacturing TCU/OBU modules for OEM vehicle assembly, and vehicle manufacturers applying for full WVTA vehicle type approval. A critical reminder: possession of an R144 component certificate does not grant direct vehicle export eligibility; the two compliance scopes are entirely independent.
STU Standalone Component Certification
R144 permits AECD devices to apply for standalone component type approval as independent STUs, with one valid certificate reusable across multiple vehicle WVTA projects.
Four mandatory test modules must be fully passed: collision trigger validation, full-temperature voice communication, GNSS positioning accuracy, and 60-minute dual full-load backup battery endurance. Each module carries independent pass/fail judgment criteria under R144 Part I Annex, with zero exemptions allowed.
Sample quantity varies by communication standard: 7 functional prototypes are required for 4G NG eCall due to higher RF loss during multi-band IMS registration testing, while 3G CS schemes only require 6 units. Manufacturers preparing a uniform 6-sample batch for 4G projects will face delayed sample supplement cycles of 2–3 weeks. Supplementary test materials include 2 sets of spare backup batteries and multiple matched antenna assemblies.
Certification authorities available for selection: E1 KBA (Germany) or E2 UTAC (France), with globally recognized approval numbers. Prioritize E2 UTAC for French export markets, as UTAC mandates high-voltage power-off testing while KBA treats it as a recommended supplementary item; vehicles certified solely under E1 will require additional high-voltage testing for French market access.
Standalone externally sold TCU modules via STU certification are exempt from UN R155 cybersecurity system requirements, which remain mandatory exclusively for full M1/N1 vehicle WVTA applications. Voluntarily building an R155 CSMS system for standalone modules generates unnecessary compliance costs.
Component Approval for Integrated Hardware
eCall hardware integrated into infotainment hosts or instrument clusters follows Component Approval under R144 Part II, subject to two hard rules:
·This pathway is only open to OEM factory-installed original equipment; third-party aftermarket retrofit devices cannot qualify and must apply for independent STU certification.
·Test item scopes differ from standalone STU units. Beyond the four core baseline tests, integrated components add three dedicated mandatory modules: vehicle CAN bus interaction verification, high-voltage power-off linkage testing and in-cabin electromagnetic coupling interference inspection, which are irrelevant to standalone STU testing. Do not apply STU quotation standards to integrated component projects.
2. Full Vehicle WVTA eCall Certification Items
eCall Sub-module Within WVTA Approval
WVTA integrates dozens of technical directive sub-items, with eCall serving as one mandatory segment. Standard workflow: OEMs source pre-certified STU modules with valid R144 approval numbers and submit a formal vehicle integration compatibility statement alongside WVTA applications. However, the compatibility statement only fulfills preliminary document requirements.
Even with certified STU modules referenced, three supplementary vehicle-level tests cannot be skipped: RED RF radiation verification, EMC interference testing and antenna matching calibration. WVTA applications lacking these three test reports will face direct rejection. Manufacturers developing proprietary in-house eCall hardware must complete full R144 four-module testing at the vehicle laboratory.
Legacy 3G STU certificates issued before January 1, 2026 can only be matched with vehicle models approved prior to the deadline. All new vehicle WVTA applications submitted after 2026 will reject 3G module certifications; OEMs purchasing legacy 3G modules for new vehicle development will face full application failure. Multiple vehicle models sharing one STU module can submit batch integration statements to qualify for administrative fee discounts, while separate individual filings incur repeated charges.
Supplementary Full-Vehicle Compliance Items Supporting eCall
·RED Radio Equipment Directive: Comply with EU 2014/53/EU limits for radiated harmonics and spurious emissions via dedicated vehicle-level verification.
·eUICC Compliance: Submit full configuration files and carrier network solution documentation.
·GDPR Data Privacy: eCall systems capture location, timestamp and VIN personal data for PSAP transmission, requiring complete data protection explanatory documents; missing privacy files rank among the top document rejection causes.
·UN R155 Vehicle Cybersecurity: Mandatory for all M1/N1 vehicles from 2026, requiring TCU eCall units to be fully incorporated into the CSMS cybersecurity management system.
·High-Voltage Power-off Testing: Mandatory for new energy M1/N1 vehicles under UTAC standards, recommended for KBA certification; commercial vehicles require dual wide-temperature (-40°C ~ 105°C) and high-voltage linkage testing, while passenger vehicles only enforce -40°C ~ 85°C temperature ranges. Avoid applying passenger vehicle temperature standards to commercial vehicle projects.
·EMC Validation: Verify stable eCall system performance under full-vehicle electromagnetic interference environments covering all communication frequency bands.
3. NG eCall Exclusive Certification Test Items
All 3G-based eCall schemes (including 3G+VoLTE transitional and 3G+CSFB fallback solutions) are fully rejected for new applications submitted after January 1, 2026, with no transitional filing channels available. Any supplier claiming viable 3G certification pathways must be replaced immediately.
All new projects adopt 4G VoLTE NG eCall with four exclusive mandatory test modules:
·IMS registration and session establishment: Verify collision-triggered IMS registration and SIP signaling handshake, requiring dedicated EU IMS simulation platforms. Laboratories without self-built simulation environments must outsource testing to European facilities, adding extra costs and 2–4 weeks lead time.
·MSD V3 data packet integrity testing: SIP-based transmission is far more complex than legacy DTMF V1/V2 standards, with mandatory verification of local coordinate storage for a minimum of 24 hours during GNSS signal loss; incomplete validation leads to full test rework.
·4G network slice priority verification: Guarantee dedicated emergency communication channels remain unoccupied during network congestion.
·eUICC emergency slice binding: A standalone new mandatory item unique to 4G modules, with full test failure upon omission.
NG eCall adds four extra test procedures compared to legacy 3G CS-eCall, extending lead time by 3–4 weeks and increasing testing costs by approximately 40%. All outdated 3G testing quotation standards are invalid for new projects.
4. ERA-GLONASS Certification (Russian Market Only)
Export to Russia cannot be fulfilled via minor modifications to EU R144 hardware, requiring an independent ERA-GLONASS compliance framework governed by GOST R 54620. Testing bodies must hold FSB Russian local accreditation, with zero recognition of KBA/UTAC R144 test reports in Russia. Three exclusive test items with no R144 equivalent are mandatory for Russian certification: extended battery durability cycling, full vehicle impact safety verification and Russian-localized EMC emission limits, each requiring independent laboratory testing. RF front-end and positioning modules typically require hardware redesign; firmware-only adjustments cannot pass full Russian standard validation. The two certification systems carry zero mutual recognition, with separate budget planning required for dual EU/Russian market export strategies.
5. Step-by-Step Guide to Pathway Selection
Critical failure risks to prioritize before pathway confirmation:
·All new applications post January 1, 2026 fully prohibit any 3G communication schemes, with no viable 3G+VoLTE transitional pathways. Hardware development based on 3G architectures will be fully scrapped with no exceptions.
·Integrated Component Approval requires supplementary vehicle CAN, high-voltage and EMC linkage testing beyond standalone STU items; do not apply STU pricing quotations to integrated hardware projects.
·Even with pre-certified STU modules referenced for vehicle WVTA, RED RF, EMC and antenna matching supplementary testing cannot be skipped; reliance solely on an integration statement results in 100% WVTA rejection, the highest-frequency compliance failure scenario.
·eUICC emergency slice binding is an independent mandatory NG eCall test item, with full certification failure upon omission.
·ERA-GLONASS is not a subset of R144 compliance, with exclusive mandatory testing for battery durability, vehicle impact safety and Russian EMC limits requiring hardware redesign rather than simple firmware adjustments.
·Mass-produced TCU modules prioritize independent R144 STU certification for cross-vehicle certificate reuse. Vehicle manufacturers exporting to the EU should reference pre-approved STU certificates for WVTA filing while completing full supplementary RED, GDPR, R155, EMC and antenna matching testing. All new post-2026 projects must adopt 4G VoLTE NG eCall, with budget planning accounting for four additional test modules and a 3–4 week extended timeline. Separate parallel certification planning is required for dual EU/Russian market export targeting ERA-GLONASS and R144 simultaneously.
BlueAsia provides one-stop compliance support covering R144 standalone STU certification, full vehicle WVTA eCall testing and exclusive ERA-GLONASS certification services. For inquiries, contact BlueAsia Compliance Consultant: +86 13534225140 (Benson)
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