{"id":23701,"date":"2026-01-27T08:22:46","date_gmt":"2026-01-27T08:22:46","guid":{"rendered":"https:\/\/www.obd2tool.com\/blog\/?p=23701"},"modified":"2026-01-27T08:22:46","modified_gmt":"2026-01-27T08:22:46","slug":"epc-software-faq-common-problems-causes-fixes-xentry-wis-asra","status":"publish","type":"post","link":"https:\/\/www.obd2tool.com\/blog\/epc-software-faq-common-problems-causes-fixes-xentry-wis-asra\/","title":{"rendered":"EPC Software FAQ \u2013 Common Problems, Causes &#038; Fixes (XENTRY \/ WIS \/ ASRA)"},"content":{"rendered":"<p>This EPC Software FAQ answers the most common questions users encounter when installing and using EPC, XENTRY, WIS, and ASRA software.<br \/>\nIf your <a href=\"https:\/\/www.obd2tool.com\/blog\/mb-star-c4-c5-c6-lastest-software-update\/\">EPC software<\/a> shows missing modules, cannot read data cards, or behaves abnormally, this guide will help you fix it quickly.<\/p>\n<hr \/>\n<h2>Frequently Asked Questions (FAQ)<\/h2>\n<hr \/>\n<h2>\u2753 Why does my EPC software only have ASRA and no XENTRY for cars?<\/h2>\n<h3>\u2705 Answer<\/h3>\n<p>This happens when XENTRY Truck (Commercial Vehicle system) is installed instead of XENTRY Car (Passenger Vehicle system).<\/p>\n<p>There are two separate XENTRY systems:<\/p>\n<ul>\n<li>XENTRY Truck \u2192 for trucks, buses, commercial vehicles<\/li>\n<li>XENTRY Car \u2192 for passenger cars<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-23349\" src=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2025\/10\/MB-Star-C4-C5-BENZ-Diagnostic-Software-1.jpg\" alt=\"\" width=\"1351\" height=\"759\" srcset=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2025\/10\/MB-Star-C4-C5-BENZ-Diagnostic-Software-1.jpg 1351w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2025\/10\/MB-Star-C4-C5-BENZ-Diagnostic-Software-1-300x169.jpg 300w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2025\/10\/MB-Star-C4-C5-BENZ-Diagnostic-Software-1-900x506.jpg 900w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2025\/10\/MB-Star-C4-C5-BENZ-Diagnostic-Software-1-768x431.jpg 768w\" sizes=\"(max-width: 1351px) 100vw, 1351px\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-23448\" src=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2025\/07\/mb-star-truck-software.png\" alt=\"\" width=\"1172\" height=\"664\" srcset=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2025\/07\/mb-star-truck-software.png 1172w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2025\/07\/mb-star-truck-software-300x170.png 300w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2025\/07\/mb-star-truck-software-900x510.png 900w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2025\/07\/mb-star-truck-software-768x435.png 768w\" sizes=\"(max-width: 1172px) 100vw, 1172px\" \/><\/p>\n<p>If your system is Truck-based, XENTRY Car functions will not appear.<\/p>\n<h3>\ud83d\udd27 How to Fix<\/h3>\n<ul>\n<li>Confirm whether your vehicle is a car or truck<\/li>\n<li>Request a system change to XENTRY Car if needed<\/li>\n<li>Reinstall the correct system version<\/li>\n<\/ul>\n<hr \/>\n<h2>\u2753 Why can\u2019t I open WIS or EPC, or why is there no data displayed?<\/h2>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-23704\" src=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-3.jpg\" alt=\"\" width=\"1000\" height=\"578\" srcset=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-3.jpg 1000w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-3-300x173.jpg 300w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-3-900x520.jpg 900w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-3-768x444.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<h3>\u2705 Answer<\/h3>\n<p>WIS and EPC are time-dependent applications. If your computer system date is incorrect, the database may fail to load.<\/p>\n<h3>\ud83d\udd27 Correct Usage Steps<\/h3>\n<ol>\n<li>Before opening WIS or EPC\n<ul>\n<li>Set Windows system date to year 2023<\/li>\n<\/ul>\n<\/li>\n<li>Open WIS \/ EPC and use normally<\/li>\n<li>Before running XENTRY diagnosis\n<ul>\n<li>Change system date back to current date<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u26a0\ufe0f Important:<br \/>\nDo not run XENTRY diagnostics with an outdated system date.<\/p>\n<hr \/>\n<h2>\u2753 Why can\u2019t EPC read the data card even after setup?<\/h2>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-23703\" src=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-4.jpg\" alt=\"\" width=\"1000\" height=\"709\" srcset=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-4.jpg 1000w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-4-300x213.jpg 300w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-4-900x638.jpg 900w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-4-768x545.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<h3>\u2705 Answer<\/h3>\n<p>In most cases, this issue is caused by:<\/p>\n<ul>\n<li>Incorrect vehicle option selection<\/li>\n<li>Invalid or incomplete VIN number<\/li>\n<li>Wrong EPC workflow<\/li>\n<\/ul>\n<p>The EPC software itself is working, but incorrect selection prevents data loading.<\/p>\n<h3>\ud83d\udd27 How to Fix<\/h3>\n<ul>\n<li>Enter a valid and complete VIN<\/li>\n<li>Follow the official EPC selection steps<\/li>\n<li>Do not manually guess options<\/li>\n<li>Select vehicle data exactly as instructed<\/li>\n<\/ul>\n<p>\u274c Incorrect: Random or manual option selection<br \/>\n\u2705 Correct: Follow the EPC workflow step by step<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-23702\" src=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-5.jpg\" alt=\"\" width=\"1000\" height=\"534\" srcset=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-5.jpg 1000w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-5-300x160.jpg 300w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-5-900x481.jpg 900w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2026\/01\/EPC-software-Precautions-for-use-5-768x410.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<hr \/>\n<h2>\u2753 Is this an EPC software bug?<\/h2>\n<h3>\u2705 Answer<\/h3>\n<p>No.<br \/>\nIn nearly all reported cases, EPC issues are caused by:<\/p>\n<ul>\n<li>System mismatch (Car vs Truck)<\/li>\n<li>Incorrect system date<\/li>\n<li>Wrong VIN or option selection<\/li>\n<\/ul>\n<p>The software is running normally, but configuration errors prevent correct usage.<\/p>\n<hr \/>\n<h2>\u2753 Can I use XENTRY, EPC, and WIS at the same time?<\/h2>\n<h3>\u2705 Answer<\/h3>\n<p>Yes, but you must switch system dates correctly:<\/p>\n<table>\n<thead>\n<tr>\n<th>Software<\/th>\n<th>Required System Date<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>WIS \/ EPC<\/td>\n<td>2023<\/td>\n<\/tr>\n<tr>\n<td>XENTRY Diagnosis<\/td>\n<td>Current date<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Failure to adjust the date properly may cause:<\/p>\n<ul>\n<li>Missing data<\/li>\n<li>License errors<\/li>\n<li>Diagnostic failures<\/li>\n<\/ul>\n<hr \/>\n<h2>\u2753 What should I check before ordering EPC or XENTRY software?<\/h2>\n<h3>\u2705 Answer<\/h3>\n<p>Before ordering, always confirm:<\/p>\n<ul>\n<li>Vehicle type: Car or Truck<\/li>\n<li>Required software: XENTRY \/ EPC \/ WIS \/ ASRA<\/li>\n<li>VIN availability<\/li>\n<li>Operating system compatibility<\/li>\n<\/ul>\n<p>This avoids incorrect installations and delays.<\/p>\n<hr \/>\n<h2>\u2753 What if EPC still doesn\u2019t work after following all steps?<\/h2>\n<h3>\u2705 Answer<\/h3>\n<p>If issues persist, professional support is recommended.<\/p>\n<p>\ud83d\udce7 Email: <a href=\"mailto:sales@obd2tool.com\">sales@obd2tool.com<\/a><br \/>\n\ud83c\udf10 Website: <a href=\"https:\/\/www.obd2tool.com\/\">https:\/\/www.obd2tool.com\/<\/a><\/p>\n<p>Our engineers can:<\/p>\n<ul>\n<li>Verify system configuration<\/li>\n<li>Check VIN and option paths<\/li>\n<li>Provide remote technical support<\/li>\n<\/ul>\n<hr \/>\n<h2>\ud83d\udd11 EPC Software Best Practices (Quick Checklist)<\/h2>\n<p>\u2714 Confirm Car vs Truck system<br \/>\n\u2714 Use correct Windows system date<br \/>\n\u2714 Enter valid VIN<br \/>\n\u2714 Follow EPC workflow exactly<br \/>\n\u2714 Avoid manual option guessing<\/p>\n<hr \/>\n<h2>\ud83d\udccc Summary<\/h2>\n<p>Most EPC, XENTRY, and WIS issues are setup-related, not software defects.<br \/>\nBy selecting the correct system, adjusting the system date properly, and following EPC selection steps exactly, the software will function normally.<\/p>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why does my EPC software only have ASRA and no XENTRY for cars?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This usually means XENTRY Truck (commercial vehicle system) is installed instead of XENTRY Car (passenger vehicle system). 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After using WIS\/EPC, change the system date back to the current date before running XENTRY diagnosis.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why can\u2019t EPC read the data card even after setup?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"In most cases, EPC cannot read the data card because the vehicle option selection is incorrect or the VIN is invalid\/incomplete. You must follow the correct EPC workflow steps and select vehicle options exactly as instructed. Avoid manual guessing and confirm the VIN is correct.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this an EPC software bug?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"In most cases, it is not a software bug. 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Contact support at sale@cnautotool.com or visit https:\/\/www.cnautotool.com\/ for assistance.\"\n      }\n    }\n  ]\n}\n<\/script><\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>This EPC Software FAQ answers the most common questions users encounter when installing and using EPC, XENTRY, WIS, and ASRA<!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":1,"featured_media":23704,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2038],"tags":[3912],"views":3277,"_links":{"self":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/23701"}],"collection":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/comments?post=23701"}],"version-history":[{"count":1,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/23701\/revisions"}],"predecessor-version":[{"id":23705,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/23701\/revisions\/23705"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/media\/23704"}],"wp:attachment":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/media?parent=23701"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/categories?post=23701"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/tags?post=23701"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}