Skip the auto shop - Our mechanics make house calls

Q: Navigation screen, backup cam, and bluetooth not working

asked by on

The dealership just replaced my battery last week. This week, the navigation screen, backup cam, and the bluetooth quit. All other electronic components are fine (all buttons, radio controls, A/C - all work well). I returned to the dealer and they claimed to have taken the unit apart and they can’t diagnose the problem. They said that I’ll have to have it replaced for $2K! Could this have happened from a faulty battery installation and what is your advice?

Hello. This could have been caused by a faulty battery installation. When the battery is not installed properly it may blow with the 100 amp battery fuse, which can be costly to replace. However, it is also likely that your radio unit coincidentally malfunctioned right after the battery was installed. There are cheaper options that you can find to replace your head unit. It is also possible for the dealer to send your head unit back to Lexus and have them repair it. This may be cheaper than buying a whole new unit. If you want to have this looked at by an independent mechanic, a technician from YourMechanic can come to your car’s location to diagnose your electrical problem.

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

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: 2000 Lexus GS400 has new battery, but will not start

Hello. Thanks for writing in about your 2000 Lexus GS400. There are various reasons for a car not to start. The best way to determine what component is causing this is by having a technician scan the VSC (vehicle stability...

Q: Can I Only Use the Rearview Mirror to Drive in Reverse?

The rear-view mirror in your vehicle is one of several mirrors that we use to gain a safe view of the other cars and obstacles around us while driving. Typically, as the name implies, the main purpose of this mirror...

Q: Headlights won't go off.

It sounds like you have a short in the wiring harness that goes to the headlight switch that is allowing the electricity to bypass the switch. I would recommend enlisting the assistance of a qualified technician who is experienced in...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...