Skip the auto shop - Our mechanics make house calls

Q: what does #7 10 AMP back up fuse under dash run to kill battery with key off and how can a person solve this

asked by on

what does #7 10 amp back up fuse under dash run to cause battery drain overnight and how can a person solve this, already unplugged radio system

My car has 200000 km. .
My car has an automatic transmission.

A: A short, or any other problem in that cause...

A short, or any other problem in that causes the circuit to stay powered up, will result in a parasitic drain on the battery. The #7 fuse provides power to the gauge control module, immobilizer unit, navigation display unit, power window master switch and washer/wiper switch. If you have determined there is a parasitic draw that goes away when this fuse is removed, you’ll need to test each of these circuits individually to see exactly where the problem lies. Electrical diagnosis can be tricky, so I suggest you have this task performed by a professional. YourMechanic is an excellent option since we come to your home or office.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My issue is with the passenger and rear windows. The power would never go off even when the car is off. Which kills my battery. 2006 Honda Accord

Hello - you may have a window switch or actuator that is stuck in the "on" position for an up or down action. This causes electrical drain as you have noticed, and runs your battery down. This problem can be...

Q: Car cranks but no start or spark

From what you've described, you may have a bad crankshaft sensor. You'll know if this is the case once you run a scan test to get sensor data. The sensor may not be sending a crankshaft signal to the computer....

Q: Speedometer 5 MPH too slow

Speedometer issues are not very common and sometimes can be caused by things we do. For example replacing the tires. Tires need to be replaced with tires of the exact same size because that is the size that is programmed...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...