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The BMW Range
3 Series
E46
Central Locking Kaput..
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<blockquote data-quote="jarance" data-source="post: 418662" data-attributes="member: 21"><p>I think I know how to solve the problem. </p><p></p><p>Based on the info from bmwgm5.com, the problem is due one relay taking all the load which cause the contact to wear prematurely.</p><p></p><p>Solution is to distribute the load with another relay located outside the module.</p><p></p><p>In order to prove my theory, I need a volunteer who have GM5 module problem for me to experiment.</p><p></p><p>The job involve cutting 8 nos of wires and wired to the new relay.</p><p></p><p>Cost of relay shall 5 amp rating but shall have 4poles to share the load of the 8 motors (actuator). Previously one contact (20 Amp rated) take the load of 8 actuator. The surge current cause the contact to wear off. if the load are distributed over 4 contacts, the wear is less. Furthermore, if one contact wear off, only one door is affected rather than 4 doors at the same time.</p><p></p><p>IM, so planning to spend RM800 or RM100 for OM or RM200 for non OM (my cost).</p></blockquote><p></p>
[QUOTE="jarance, post: 418662, member: 21"] I think I know how to solve the problem. Based on the info from bmwgm5.com, the problem is due one relay taking all the load which cause the contact to wear prematurely. Solution is to distribute the load with another relay located outside the module. In order to prove my theory, I need a volunteer who have GM5 module problem for me to experiment. The job involve cutting 8 nos of wires and wired to the new relay. Cost of relay shall 5 amp rating but shall have 4poles to share the load of the 8 motors (actuator). Previously one contact (20 Amp rated) take the load of 8 actuator. The surge current cause the contact to wear off. if the load are distributed over 4 contacts, the wear is less. Furthermore, if one contact wear off, only one door is affected rather than 4 doors at the same time. IM, so planning to spend RM800 or RM100 for OM or RM200 for non OM (my cost). [/QUOTE]
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