diff --git a/typo3/sysext/core/Classes/Localization/Parser/AbstractXmlParser.php b/typo3/sysext/core/Classes/Localization/Parser/AbstractXmlParser.php
index 88cdd453fc87611a89ac6a30d8d49eddb0f43ca9..406f7763657910dd52832951b4fa8ea44156f2b6 100644
--- a/typo3/sysext/core/Classes/Localization/Parser/AbstractXmlParser.php
+++ b/typo3/sysext/core/Classes/Localization/Parser/AbstractXmlParser.php
@@ -46,10 +46,10 @@ abstract class AbstractXmlParser implements LocalizationParserInterface
         $this->sourcePath = $sourcePath;
         $this->languageKey = $languageKey;
         if ($this->languageKey !== 'default') {
-            $this->sourcePath = GeneralUtility::getFileAbsFileName(GeneralUtility::llXmlAutoFileName($this->sourcePath, $this->languageKey));
+            $this->sourcePath = $this->getLocalizedFileName($this->sourcePath, $this->languageKey);
             if (!@is_file($this->sourcePath)) {
                 // Global localization is not available, try split localization file
-                $this->sourcePath = GeneralUtility::getFileAbsFileName(GeneralUtility::llXmlAutoFileName($sourcePath, $languageKey, true));
+                $this->sourcePath = $this->getLocalizedFileName($sourcePath, $languageKey, true);
             }
             if (!@is_file($this->sourcePath)) {
                 throw new FileNotFoundException('Localization file does not exist', 1306332397);
@@ -83,6 +83,55 @@ abstract class AbstractXmlParser implements LocalizationParserInterface
         return $this->doParsingFromRoot($rootXmlNode);
     }
 
+    /**
+     * Checks if a localized file is found in typo3conf/l10n/ (e.g. a language pack was downloaded in the backend)
+     * or if $sameLocation is set, then checks for a file located in "{language}.locallang.xlf" at the same directory
+     *
+     * @param string $fileRef Absolute file reference to locallang file
+     * @param string $language Language key
+     * @param bool $sameLocation If TRUE, then locallang localization file name will be returned with same directory as $fileRef
+     * @return string|null Absolute path to the language file, or null if error occurred
+     */
+    protected function getLocalizedFileName($fileRef, $language, $sameLocation = false)
+    {
+        // If $fileRef is already prefixed with "[language key]" then we should return it as is
+        $fileName = basename($fileRef);
+        if (GeneralUtility::isFirstPartOfStr($fileName, $language . '.')) {
+            return GeneralUtility::getFileAbsFileName($fileRef);
+        }
+
+        if ($sameLocation) {
+            return GeneralUtility::getFileAbsFileName(str_replace($fileName, $language . '.' . $fileName, $fileRef));
+        }
+
+        // Analyse file reference:
+        // Is system:
+        if (GeneralUtility::isFirstPartOfStr($fileRef, PATH_typo3 . 'sysext/')) {
+            $validatedPrefix = PATH_typo3 . 'sysext/';
+        } elseif (GeneralUtility::isFirstPartOfStr($fileRef, PATH_typo3 . 'ext/')) {
+            // Is global:
+            $validatedPrefix = PATH_typo3 . 'ext/';
+        } elseif (GeneralUtility::isFirstPartOfStr($fileRef, PATH_typo3conf . 'ext/')) {
+            // Is local:
+            $validatedPrefix = PATH_typo3conf . 'ext/';
+        } else {
+            $validatedPrefix = '';
+        }
+        if ($validatedPrefix) {
+            // Divide file reference into extension key, directory (if any) and base name:
+            list($extensionKey, $file_extPath) = explode('/', substr($fileRef, strlen($validatedPrefix)), 2);
+            $temp = GeneralUtility::revExplode('/', $file_extPath, 2);
+            if (count($temp) === 1) {
+                array_unshift($temp, '');
+            }
+            // Add empty first-entry if not there.
+            list($file_extPath, $file_fileName) = $temp;
+            // The filename is prefixed with "[language key]." because it prevents the llxmltranslate tool from detecting it.
+            return PATH_site . 'typo3conf/l10n/' . $language . '/' . $extensionKey . '/' . ($file_extPath ? $file_extPath . '/' : '') . $language . '.' . $file_fileName;
+        }
+        return null;
+    }
+
     /**
      * Returns array representation of XML data, starting from a root node.
      *
diff --git a/typo3/sysext/core/Classes/Localization/Parser/LocallangXmlParser.php b/typo3/sysext/core/Classes/Localization/Parser/LocallangXmlParser.php
index 1d8dd52884f1fc86db6aae02e38e96b78c9f69d6..fbf1ebfe92c8124615727d6918ea426272ade492 100644
--- a/typo3/sysext/core/Classes/Localization/Parser/LocallangXmlParser.php
+++ b/typo3/sysext/core/Classes/Localization/Parser/LocallangXmlParser.php
@@ -45,7 +45,7 @@ class LocallangXmlParser extends AbstractXmlParser
         // Parse source
         $parsedSource = $this->parseXmlFile();
         // Parse target
-        $localizedTargetPath = GeneralUtility::getFileAbsFileName(GeneralUtility::llXmlAutoFileName($this->sourcePath, $this->languageKey));
+        $localizedTargetPath = $this->getLocalizedFileName($this->sourcePath, $this->languageKey);
         $targetPath = $this->languageKey !== 'default' && @is_file($localizedTargetPath) ? $localizedTargetPath : $this->sourcePath;
         try {
             $parsedTarget = $this->getParsedTargetData($targetPath);
diff --git a/typo3/sysext/core/Classes/Utility/GeneralUtility.php b/typo3/sysext/core/Classes/Utility/GeneralUtility.php
index ca61e94006815d1f6bc9e25cdfd92d46c1d1971b..d6ee404eda8f8852939ccd7d4e58ae22616342f3 100644
--- a/typo3/sysext/core/Classes/Utility/GeneralUtility.php
+++ b/typo3/sysext/core/Classes/Utility/GeneralUtility.php
@@ -3336,9 +3336,11 @@ class GeneralUtility
      * @param string $language Language key
      * @param bool $sameLocation If TRUE, then locallang localization file name will be returned with same directory as $fileRef
      * @return string Returns the filename reference for the language unless error occurred in which case it will be NULL
+     * @deprecated in TYPO3 v9.0, will be removed in TYPO3 v10.0, as the functionality has been moved into AbstractXmlParser.
      */
     public static function llXmlAutoFileName($fileRef, $language, $sameLocation = false)
     {
+        trigger_error('This method will be removed in TYPO3 v10.0, the functionality has been moved into AbstractXmlParser', E_USER_DEPRECATED);
         // If $fileRef is already prefixed with "[language key]" then we should return it as is
         $fileName = basename($fileRef);
         if (self::isFirstPartOfStr($fileName, $language . '.')) {
diff --git a/typo3/sysext/core/Documentation/Changelog/master/Deprecation-83083-GeneralUtilityllXmlAutoFileName.rst b/typo3/sysext/core/Documentation/Changelog/master/Deprecation-83083-GeneralUtilityllXmlAutoFileName.rst
new file mode 100644
index 0000000000000000000000000000000000000000..7b95a78f8636b089b6c43c8b78b6ca9b5af5c022
--- /dev/null
+++ b/typo3/sysext/core/Documentation/Changelog/master/Deprecation-83083-GeneralUtilityllXmlAutoFileName.rst
@@ -0,0 +1,33 @@
+.. include:: ../../Includes.txt
+
+=========================================================
+Deprecation: #83083 - GeneralUtility::llXmlAutoFileName()
+=========================================================
+
+See :issue:`83083`
+
+Description
+===========
+
+The method ``GeneralUtility::llXmlAutoFileName()``, which detects a XLF/XML translation file, has been moved into
+AbstractXmlParser, as the functionality is solely used in there, and the code belongs in this area.
+
+
+Impact
+======
+
+Calling the method will trigger a deprecation warning.
+
+
+Affected Installations
+======================
+
+Any TYPO3 instance with an extension using the method directly.
+
+
+Migration
+=========
+
+If necessary, use the XmlParser functionality, or implement the code directly in your own extension.
+
+.. index:: PHP-API, FullyScanned
\ No newline at end of file
diff --git a/typo3/sysext/install/Configuration/ExtensionScanner/Php/MethodCallStaticMatcher.php b/typo3/sysext/install/Configuration/ExtensionScanner/Php/MethodCallStaticMatcher.php
index 3edd1528ac48d72e1a3973a5eca6cee27ee5c43d..5324b3bd0fcd8ef06813337257b398ca3bf8114b 100644
--- a/typo3/sysext/install/Configuration/ExtensionScanner/Php/MethodCallStaticMatcher.php
+++ b/typo3/sysext/install/Configuration/ExtensionScanner/Php/MethodCallStaticMatcher.php
@@ -505,4 +505,11 @@ return [
             'Deprecation-82445-PageTranslationRelatedFunctionality.rst',
         ],
     ],
+    'TYPO3\CMS\Core\Utility\GeneralUtility::llXmlAutoFileName' => [
+        'numberOfMandatoryArguments' => 2,
+        'maximumNumberOfArguments' => 3,
+        'restFiles' => [
+            'Deprecation-83083-GeneralUtilityllXmlAutoFileName.rst',
+        ],
+    ],
 ];