Hello, sorry for no new post....
That not module problem - that joomla problem,
Please check language menu setting for incorrect pages
Please check language setting for that user
This is no joomla problem, I add in "mod_vehicle_manager_search_pro.php"
if ($languagelocale == ''

{
$mosConfig_lang = $lang->getTag();
$languagelocale = $lang->getTag();
}
Now my module still en spanish in all site....
....thanks