Nav unit died
01-19-19, 11:38 PM
#1
Racer
Thread Starter
Nav unit died
Is it possible to acquire another trunk unit and plug it in to reenable nav radio again?
01-19-19, 11:51 PM
#2
Racer
Thread Starter
https://www.ebay.com/itm/OEM-98-1998-99-1999-00-2000-Lexus-LS400-Navigation-GPS-Player-86841-50040/312253550250?epid=1317860989&hash=item48b3c30eaa:g:s0QAAOSw38VbsxZi
Like can I get this and plug it in.
Like can I get this and plug it in.
01-21-19, 03:15 PM
#4
Racer
Thread Starter
01-23-19, 07:15 AM
#5
Driver School Candidate
Interestingly enough, I'm looking at that exact same unit. The one in my car was removed years ago by a previous owner and I never got around to replacing it.
To touch on the question of just plugging it in; yes, it's a simple install. However, If I'm not mistaken, the nav unit has an internal hard drive that is required for the nav to actually function. I would contact the vendor and find out if a hard drive is included.
To touch on the question of just plugging it in; yes, it's a simple install. However, If I'm not mistaken, the nav unit has an internal hard drive that is required for the nav to actually function. I would contact the vendor and find out if a hard drive is included.
01-23-19, 07:18 AM
#6
Racer
Thread Starter
Interestingly enough, I'm looking at that exact same unit. The one in my car was removed years ago by a previous owner and I never got around to replacing it.
To touch on the question of just plugging it in; yes, it's a simple install. However, If I'm not mistaken, the nav unit has an internal hard drive that is required for the nav to actually function. I would contact the vendor and find out if a hard drive is included.
To touch on the question of just plugging it in; yes, it's a simple install. However, If I'm not mistaken, the nav unit has an internal hard drive that is required for the nav to actually function. I would contact the vendor and find out if a hard drive is included.
I'm not concerned about the nav portion just the radio. My prior one didn't have functioning nav either.
01-23-19, 07:47 AM
#7
Driver School Candidate
So does your radio not function? My touch screen display and radio functions like normal, I just can't update the dash clock or obviously use the nav features. When I try and set the clock to the right region, I get an error message on the display that reads "Check Nav HDD"
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01-23-19, 07:50 AM
#8
Racer
Thread Starter
So does your radio not function? My touch screen display and radio functions like normal, I just can't update the dash clock or obviously use the nav features. When I try and set the clock to the right region, I get an error message on the display that reads "Check Nav HDD"
01-23-19, 09:23 AM
#9
Driver School Candidate
I would look at the dash LCD unit as being the culprit or start looking at fuses and connections. The nav unit in the trunk 'shouldn't' have any effect on the head unit or the LCD display. It's possible that the nav unit may have tripped something when it fried, but unlikely.
When I first bought my car again back in 2006 (long story), the nav unit had been removed, but it wasn't until I tried to change the time that I realized it was gone. Everything works as advertised with the exception of nav.
When I first bought my car again back in 2006 (long story), the nav unit had been removed, but it wasn't until I tried to change the time that I realized it was gone. Everything works as advertised with the exception of nav.
01-23-19, 09:31 AM
#10
Racer
Thread Starter
I would look at the dash LCD unit as being the culprit or start looking at fuses and connections. The nav unit in the trunk 'shouldn't' have any effect on the head unit or the LCD display. It's possible that the nav unit may have tripped something when it fried, but unlikely.
When I first bought my car again back in 2006 (long story), the nav unit had been removed, but it wasn't until I tried to change the time that I realized it was gone. Everything works as advertised with the exception of nav.
When I first bought my car again back in 2006 (long story), the nav unit had been removed, but it wasn't until I tried to change the time that I realized it was gone. Everything works as advertised with the exception of nav.
01-23-19, 10:53 AM
#11
Driver School Candidate
I'm looking at the troubleshooting tree in the factory service manual (FSM) and that doesn't appear to be the case. The screen monitor/stereo is it's own unit, however it still relies on the amplifier under the seat as a power reference. (It looks like if one isn't powered, neither will the other one be) Which fuses have you checked? According to the FSM there are 3 fuses for the dash unit, Radio1, Radio2 and Dome. For the amp, there is one fuse marked AMP. I'm still trying to find the breakdown in the amp and wiring schematics, but I don't have the actual chassis electrical system book, so I've been looking online.
What I have found out though is that if there is a B+ (power) or ground short detected in the AVC-LAN then the system won't power up.
I would double check all the fuses with a meter and then start reading connections. Verify you are grounded at all the appropriate spots and have power where you need to have power.
What I have found out though is that if there is a B+ (power) or ground short detected in the AVC-LAN then the system won't power up.
I would double check all the fuses with a meter and then start reading connections. Verify you are grounded at all the appropriate spots and have power where you need to have power.
01-23-19, 11:06 AM
#12
Racer
Thread Starter
I'm looking at the troubleshooting tree in the factory service manual (FSM) and that doesn't appear to be the case. The screen monitor/stereo is it's own unit, however it still relies on the amplifier under the seat as a power reference. (It looks like if one isn't powered, neither will the other one be) Which fuses have you checked? According to the FSM there are 3 fuses for the dash unit, Radio1, Radio2 and Dome. For the amp, there is one fuse marked AMP. I'm still trying to find the breakdown in the amp and wiring schematics, but I don't have the actual chassis electrical system book, so I've been looking online.
What I have found out though is that if there is a B+ (power) or ground short detected in the AVC-LAN then the system won't power up.
I would double check all the fuses with a meter and then start reading connections. Verify you are grounded at all the appropriate spots and have power where you need to have power.
What I have found out though is that if there is a B+ (power) or ground short detected in the AVC-LAN then the system won't power up.
I would double check all the fuses with a meter and then start reading connections. Verify you are grounded at all the appropriate spots and have power where you need to have power.
I'll have those checked, unit arrives this week. Hopefully it's just it
02-07-19, 09:34 PM
#13
Racer
Thread Starter
I'm looking at the troubleshooting tree in the factory service manual (FSM) and that doesn't appear to be the case. The screen monitor/stereo is it's own unit, however it still relies on the amplifier under the seat as a power reference. (It looks like if one isn't powered, neither will the other one be) Which fuses have you checked? According to the FSM there are 3 fuses for the dash unit, Radio1, Radio2 and Dome. For the amp, there is one fuse marked AMP. I'm still trying to find the breakdown in the amp and wiring schematics, but I don't have the actual chassis electrical system book, so I've been looking online.
What I have found out though is that if there is a B+ (power) or ground short detected in the AVC-LAN then the system won't power up.
I would double check all the fuses with a meter and then start reading connections. Verify you are grounded at all the appropriate spots and have power where you need to have power.
What I have found out though is that if there is a B+ (power) or ground short detected in the AVC-LAN then the system won't power up.
I would double check all the fuses with a meter and then start reading connections. Verify you are grounded at all the appropriate spots and have power where you need to have power.
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