{"id":1878,"date":"2019-05-13T06:49:40","date_gmt":"2019-05-13T06:49:40","guid":{"rendered":"http:\/\/www.cnautotool.com\/blog\/?p=1878"},"modified":"2019-05-13T06:54:19","modified_gmt":"2019-05-13T06:54:19","slug":"how-to-do-if-mercedes-w176-not-start-no-fault-codes-in-sd-connect-c4","status":"publish","type":"post","link":"https:\/\/www.cnautotool.com\/blog\/how-to-do-if-mercedes-w176-not-start-no-fault-codes-in-sd-connect-c4\/","title":{"rendered":"How to do if Mercedes w176 not start &#038; no fault codes in SD Connect C4"},"content":{"rendered":"<p><strong>Issues :<\/strong><\/p>\n<p>There have customer who have\u00a0Mercedes w176 (a gasoline with 270 engine year 2013)\u00a0and it is a pain in the ass. The car came with a platform because it would not start.\u00a0He\u00a0run a quick test using the <a href=\"https:\/\/www.cnautotool.com\/goods-334-MB+SD+Connect+Compact+4+Star++Diagnostic+Tool+With+WiFi+201609+.html\"><span>SD connect C4<\/span><\/a>\u00a0mux and all control units were clear. He\u00a0tried to start the car but the engine would half turn and stop. Something was cutting it off electrically.<\/p>\n<p>Furthermore, without\u00a0any obvious reason, the engine fan started working and the communication with the engine was lost. He\u00a0have discovered that the the engine control was loosing a ground point. that is why the engine fan started. He have put an outside earth and the car came back in engine turning and cutting out electrically. He\u00a0tried everything.<\/p>\n<p>checked all fuses and relays (including the mini relays)<\/p>\n<p>replaced terminal 30g relay<\/p>\n<p>replaced exhaust camshaft sensor<\/p>\n<p>checked crank sensor with oscilloscope and looks ok<\/p>\n<p>tried second key<\/p>\n<p>guided test for drive authorization (all ok)<\/p>\n<p>and many many more<\/p>\n<p>But still no fault codes.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>So how to do next ? Suggestion from the experienced <\/strong><strong>:<\/strong><strong><\/strong><\/p>\n<p>The problem with most technically inclined individuals trying to fix a dead engine is that we tend to quickly forget <span style=\"font-family: \u5b8b\u4f53;\">\u201d<\/span><span style=\"font-family: Calibri;\">THE BASICS<\/span><span style=\"font-family: \u5b8b\u4f53;\">\u201d <\/span><span style=\"font-family: Calibri;\">ingredients for combustion to take place just so the engine may run!<\/span><\/p>\n<p>1. Check for spark, is it there throughout or intermittently or not there at all,<\/p>\n<p>-Famous L5, ECU, DI coils, e.t.c<\/p>\n<p>2. Check for fuel rail pressure ( challenging on any A-class but doable if u want it to start and run),<\/p>\n<p>furthermore M270 has piezo direct injection. so u have to find a way to confirm that fuel is delivered (repair fuel system accordingly)<\/p>\n<p>3. Check for compression and make reference to specific values in WIS.<\/p>\n<p>&nbsp;<\/p>\n<p>(\u00a0<strong>Notice <\/strong><strong>:<\/strong>\u00a0this is a discussion in the MH community; just post it here for sharing info only\u00a0!)<\/p>\n<p>If still have any more issues , welcome to contact our sales ( <a href=\"mailto:sale@cnautotool.com\"><span style=\"text-decoration: underline;\">sale@cnautotool.com<\/span><\/a>\u00a0)<\/p>\n<p>Thank you<\/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>Issues : There have customer who have\u00a0Mercedes w176 (a gasoline with 270 engine year 2013)\u00a0and it is a pain in the ass. The car came with a platform because it would not start.\u00a0He\u00a0run a quick test using the SD connect&hellip; <a href=\"https:\/\/www.cnautotool.com\/blog\/how-to-do-if-mercedes-w176-not-start-no-fault-codes-in-sd-connect-c4\/\" class=\"more-link\">Continue Reading <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- 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":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[8,1,240],"tags":[659,80,58,319,723],"_links":{"self":[{"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/posts\/1878"}],"collection":[{"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/comments?post=1878"}],"version-history":[{"count":3,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/posts\/1878\/revisions"}],"predecessor-version":[{"id":1880,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/posts\/1878\/revisions\/1880"}],"wp:attachment":[{"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/media?parent=1878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/categories?post=1878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/tags?post=1878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}