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Posted on Jan 02, 2017
SOURCE: 2003 bmw 525i
If the brake lights are really on (?) this represents about a 4-5 ampere drain that would drag down most batteries in less than a day. (Could be over 100 ampere/hours.)
I don't know your car but brake lights can be controlled by a switch operated by the pedal suspension or a pressure switch that monitors hydraulic pressure in the braking circuit.
If your brake lights are on, the switch that controls them has failed or a relay that is operated by the switch.
If the car seems sluggish or pulls when driven, it could be a failure in the ABS circuit since that is a high-demand (normally intermittant) load.
The best way to locate the problem would be to monitor the current drain with a meter in series from the battery (engine off, monitor the ground side) and pull and replace fuses one-by-one to see which circuit is the culprit.
Posted on Jul 02, 2008
SOURCE: 1993 bmw 525i fuel pump
Hi, your fuel pump is located in the trunk underneath an access cover on the passenger side. remove the screws on the cover and you will see the in tank pump and sending unit. when replacing your pump, make sure to note the position of the 2 fuel hoses so you don't accidentally cross them when putting in the new pump.
Posted on Apr 05, 2009
The EH gearbox switch serves to communicate with the TCM (Trans Control Mod). In A mode, it tells the TCM to operate in the most economical shifting program. M mode is for manual shift. If you have a * instead of a M, it stands for winter mode. This mode causes the vehicle to start off in 2nd so that torque is reduced thus reducing wheel spin on slick surfaces. Of course, by shifting into 4 or 3 puts you into sport mode for a more spirited shift pattern.
Posted on Dec 11, 2009
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