Question about Hyundai Motor 2002 Sonata
When i turn the key the engine wont turn over and when i flip the switch to open the trunk, it makes a click sound but wont pop open
All electrical users are dependent on battery condition; the starter draws 120-200 amps of current and drops even a good battery down a volt or two.
The tolerance of such niceties as the door locks and trunk release are also dependent on the battery and the voltage and current needs for them to perform can vary widely so if the battery is low, many items will cease to operate properly, the starter first and foremost since its needs are way beyond the load represented by the accessories.
If this problem occurs suddenly, the battery may be OK but its post clamps may not be contacting any longer so cleaning the battery posts and the clamps that sit on them is the first thing to try. You can do a basic check to determine if battery or clamps are at fault by having a friend with a meter check across the battery and trying to start the car; if one measures directly on the battery posts and the battery stays at 12.6 volts while trying to start the car, then the battery clamps or the connection at the starter is at fault. Alternately, if the meter probes are placed on the battery clamps and the voltage plummets when the stater is tried, the clamps are definitely at fault. A special wire brush with a male and female end can be had at any parts store and will do a good job on the two mating parts.
NOTE: When fussing around with your battery, ALWAYS remove the ground (negative) clamp FIRST. If your tool bumps something that is grounded, nothing bad will happen and then the positive one next because if you then get between the positive post and some chassis part, again, nothing will happen because the negative end is already separated from the chassis.
Posted on Oct 03, 2008
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