Navigation Screen Blackout After Battery Replacement?

Asked by Feb 22, 2016 at 09:29 PM about the 2007 Lexus GX 470

Question type: Maintenance & Repair

I just had my battery replaced at the dealer - and about a week later my
nav screen went black and died. All the other electronic components on my
car are fine. All the buttons/radio controls/AC work. Just the nav
screen/backup cam and bluetooth are out. I took the car back to the dealer
and they claim to have taken the unit apart and can't diagnose the
problem...saying I can only replace the whole system for $2000+. My
question - has anyone heard of this happening? I am convinced it is due to
a faulty battery installation and I want them to replace the system. What
would have caused something like this? Any help/advice would be great.

1 Answer

4,575

check the voltage at the battery....it should be 12.5 volts...your equipment sounds like it's suffering from an undervoltage condition....even if a new battery, there are things that can go wrong, such as the cable going to the motor block should be clean and wirebrushed to allow at least 50 amps service...and the clamp-post should have NO corrosion on them black and red too...also there is certainly an auxilliary or two extra red loopers off of the positive cable...(those are from the alternator, and to the devices) perhaps those were not made shiny clean and are creating the undervoltage condition...wirebrush everything for great electrical contact~...think this is about proper voltage to the chassis~ ...good grounding~!

Your Answer

Add photo

Related Questions

Search Lexus GX 470 Questions

Lexus GX 470 Experts

#1 Kyle Rogan
Kyle Rogan
Reputation 390
#2 Tom Demyan
Tom Demyan
Reputation 230
#3 Stew Sutton
Stew Sutton
Reputation 150
View All

Related Models For Sale

Used Lexus LX 470
14 Great Deals out of 295 listings starting at $4,500
Used Lexus LX 570
11 Great Deals out of 1,658 listings starting at $21,995
Used Toyota 4Runner
406 Great Deals out of 20,535 listings starting at $2,499
Used Toyota Land Cruiser
29 Great Deals out of 1,200 listings starting at $4,500
Used Lexus RX 350
604 Great Deals out of 17,520 listings starting at $6,680
Used Toyota Sequoia
182 Great Deals out of 6,814 listings starting at $2,477
Used Toyota Highlander
693 Great Deals out of 27,882 listings starting at $2,988
Used Acura MDX
423 Great Deals out of 16,089 listings starting at $1,750
Used Lexus LS 460
106 Great Deals out of 2,491 listings starting at $9,880
Used Mercedes-Benz GL-Class
210 Great Deals out of 3,882 listings starting at $9,450
Used BMW X5
611 Great Deals out of 16,977 listings starting at $2,788
Used Chevrolet Tahoe
1,103 Great Deals out of 31,960 listings starting at $1,495
Used Infiniti QX56
90 Great Deals out of 1,819 listings starting at $2,950
Used Honda Pilot
612 Great Deals out of 20,704 listings starting at $1,500

Used Cars For Sale

2009 Lexus GX 470 For Sale
3 Great Deals out of 50 listings starting at $14,995
2008 Lexus GX 470 For Sale
8 Great Deals out of 164 listings starting at $13,485
2007 Lexus GX 470 For Sale
13 Great Deals out of 199 listings starting at $8,995
2006 Lexus GX 470 For Sale
13 Great Deals out of 248 listings starting at $7,800
2005 Lexus GX 470 For Sale
9 Great Deals out of 174 listings starting at $7,999