<h2 data-start="184" data-end="210"><span role="text"><strong data-start="187" data-end="210">Product Description</strong></span></h2> <p data-start="211" data-end="428">Replace your faulty or malfunctioning <strong data-start="249" data-end="284">Engine Control Unit (DME / ECU)</strong> with this OEM BMW module, part number <strong data-start="323" data-end="334">8662411</strong>, designed for <strong data-start="349" data-end="427">BMW 118i and 318i models equipped with the B38 engine (F20 / F30 platform)</strong>.</p> <p data-start="430" data-end="692">The DME (Digital Motor Electronics) is the <strong data-start="473" data-end="497">main engine computer</strong>, responsible for controlling fuel injection, ignition timing, turbo operation, and overall engine performance. A faulty ECU can cause starting issues, poor performance, or engine warning lights.</p> <hr data-start="694" data-end="697"> <h2 data-start="699" data-end="714"><span role="text"><strong data-start="702" data-end="714">Features</strong></span></h2> <ul data-start="715" data-end="963"> <li data-start="715" data-end="758">OEM BMW Engine Control Unit (DME / ECU)</li> <li data-start="759" data-end="787">Part Number: <strong data-start="774" data-end="785">8662411</strong> </li> <li data-start="788" data-end="825">Compatible with B38 engine models</li> <li data-start="826" data-end="870">Fits BMW F20 (1 Series) / F30 (3 Series)</li> <li data-start="871" data-end="929">Controls engine performance, fuel system, and ignition</li> <li data-start="930" data-end="963">Direct OEM replacement module</li> </ul> <hr data-start="965" data-end="968"> <h2 data-start="970" data-end="986"><span role="text"><strong data-start="973" data-end="986">Condition</strong></span></h2> <p data-start="987" data-end="1038">Used / OEM (tested working unless otherwise stated)</p> <hr data-start="1040" data-end="1043"> <h2 data-start="1045" data-end="1067"><span role="text"><strong data-start="1048" data-end="1067">Important Notes</strong></span></h2> <ul data-start="1068" data-end="1297"> <li data-start="1068" data-end="1129">ECU is <strong data-start="1077" data-end="1091">VIN-locked</strong> and requires <strong data-start="1105" data-end="1127">programming/coding</strong> </li> <li data-start="1130" data-end="1195">May require <strong data-start="1144" data-end="1193">ISN matching, key synchronization, or cloning</strong> </li> <li data-start="1196" data-end="1237">Professional installation recommended</li> <li data-start="1238" data-end="1297">Please verify part number compatibility before purchase</li> </ul> <hr data-start="1299" data-end="1302"> <h2 data-start="1304" data-end="1332"><span role="text"><strong data-start="1307" data-end="1332">Common Symptoms Fixed</strong></span></h2> <ul data-start="1333" data-end="1503"> <li data-start="1333" data-end="1358">Engine will not start</li> <li data-start="1359" data-end="1384">Check engine light ON</li> <li data-start="1385" data-end="1424">Poor engine performance or misfires</li> <li data-start="1425" data-end="1458">Communication faults with ECU</li> <li data-start="1459" data-end="1503">Fault codes related to engine management</li> </ul> <hr data-start="1505" data-end="1508"> <h2 data-start="1510" data-end="1524"><span role="text"><strong data-start="1513" data-end="1524">Fitment</strong></span></h2> <p data-start="1525" data-end="1536">BMW Models:</p> <ul data-start="1537" data-end="1610"> <li data-start="1537" data-end="1573">1 Series F20 – 118i (B38 engine)</li> <li data-start="1574" data-end="1610">3 Series F30 – 318i (B38 engine)</li> </ul> <hr data-start="1612" data-end="1615"> <h2 data-start="1617" data-end="1634"><span role="text"><strong data-start="1620" data-end="1634">Tags </strong></span></h2> <p data-start="1635" data-end="1755">BMW DME ECU 8662411, F30 318i ECU, F20 118i engine computer, BMW B38 ECU, BMW engine control module, BMW ECU replacement</p> <hr data-start="1757" data-end="1760"> <h2 data-start="1762" data-end=