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Yes, many erratic electrical problems with the Ford Taurus can be caused by either a weak battery or a bad Transmission Range Sensor. Even though a weak battery can start your car, it causes the computer to think there is a problem and start shutting off accessories, even though the voltage returns to normal once the engine is running.

The battery is the easiest to check (with a $10 voltmeter from any auto store) and cheapest to replace, so start there. With the engine off, the battery should measure about 11.5V to 12.5V. While cranking the engine, the battery voltage will drop to 10.0V to 11.0V (you'll need a helper for that check). If your values are lower, replace the battery. The 56R battery is the basic Taurus battery, and the optional 36R has more cold-start and reserve power, for about $15 more. Check your owner's manual, as some years or models might be different.

NOTE: The battery may be low because the alternator isn't working right. Check the alternator for proper output. Put a volt meter across the battery with the engine running. The alternator should keep the voltage somewhere between 13.5V to 14.5V. If it's much below that you probably need a new alternator.

If that doesn't fix your problem (especially if your radio shuts off when you put the car in reverse), have a transmission shop replace your Transmission Range Sensor. That should cost about $150 total.

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โˆ™ 2009-09-20 04:20:19
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Q: Taurus has a low battery and the blinkers power steering radio and windows are working only when they feel like it would a new battery correct this problem?
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