Locked out of the navi display, that is. Like everyone else my HFL failed. After it drained my battery a couple of times I got a new battery and had it disco'd. Since that time the navi/audio unit will only pull in about 60% of Sirius channels and continually locks itself. So I'll hop in, fire the engine up and the display screen will be asking for my security code as if the battery had just been disconnected/reconnected. Darnedest gremlin. Acura, of course, recommends a new $1300 unit. For $1300 I can live without 70's on 7 and entering a 4-digit code a few times a week - but is this a place that all 3rd gen TL's will eventually be?

thx

 

check battery post for unsecure terminals.

 

Or corrosion

 

I don't think that's it. Battery is brand new, so there is no corrosion and while at the dealership they replaced connector bolts and made sure everything was snug.

 

But I'm gathering by the fact that you both have been around the block more than a few times on here & that you're looking for possible source issues - that this ISN'T necessarily common/inevitable in the way that the HFL fail is?

 

it doesnt hurt to physically check your own battery.
your scenario is the classic case of the terminal slipping off the battery post momentarily, causing the nav to reset and ask for codes.
physically check battery.

 

= truth

 

Also check your battery cables at both ends. Corrosion can and has happened anywhere along the battery cables.

 

HELP. This is getting chronic. Checked cables & attachments; all seems a-ok. Now however, the car has begun displaying this behavior (& worse) while running, not just on start up. Multiple times in the past couple of days the navi/stereo display has blacked ...while the engine is running... then come back on but the car has reset EVERYTHING. Re-enter nav code, trip odo set back to 0.00, etc. And now today it completely killed while running. I was on the interstate and just *bam*, dead as dead. All of a sudden I'm just rolling, coasting with zero power. Nothing on or functioning at all. Fortunately its a manual transmission so I just rev-matched the engine, popped the clutch and it leaped back to life but, day-um, have I ever got a gremlin.

Anything?

 

One not uncommon possibility is a bad ignition switch.

 

Have you checked these.. the corrosion can be underneath the cable itself