Question about BMW 328
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---------------------------------- as you mentioned the remote key does not works to unlock or lock doors when car is in hot whether but works in cold whether.this happens because ,in the control pannel when the car gets hot there are certain wires they get bit loose when gets hot.actually on that wire after soldering them a special liquid/spary is applied so that wire get properly gripped.but slowly slowly after certain time the liquid/spray gets dried up and vanishes.so because of that spray on the soldered wires vanishes ,while the car get hot the wires becomes loose and due to that remote key lock function stops working and when in cold whether the wires gets firm again and it starts working.so in control module just get all the wires resoldered and resetted.this will help you.
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Posted on May 21, 2009
It is the Central locking Module a large black box under the dash that is faulty, apparently a common problem.
Try to lock yourself inside the car and when locking listen very carefully where does the clicking sound comes from, as for lights relays are being used, so by finding the source of clicking sound you'll get to the location of alarm/imobiliser/central locking system. So after that we will know where all the work is needed. Also I'd like you to note any identification marks from the unit. Usually it is being placed under the panel, next to the passengers right feet but in some cases it might be just above the dirvers knees, under the dashboard, rarely even under the back seat. so first thing that we need to do is to find the exact unit.
Also as for so old vehicle try to get to the wires which goes from the car body to the door (passenger), as due to age wires might be snapped or damaged, preventing doors from lock/unlock commands.
If unable to lock manually you nead to strip out the door-lock itself, wash it with something like WD-40 and add some grease. Nothing electronicaly can prevent manual operation of the door-lock. not in 1990.
Posted on May 21, 2009
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Posted on Jan 02, 2017
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