jwxspoon

Picked up my new-to-me E-500 on Thursday. Everything works great, car looks brand new, drives wonderful. Hook up the sat radio. order a new nav disc online, life is great.

This morning, the COMAND unit will not boot up. I get the mercedes symbol for 10 sec or so; then the screen goes dark. Also, I have a 'Tele Aid malfunction - visit workshop' message.

EDIT - did get rain all night last night. I'm assuming that has something to do with the problems.



Shop is closed until Monday. Anyone have any ideas?

Many thanks,

jw

Barry45RPM

Did you install the new nav disk into the trunk mounted NAV drive. You might just need a COMAND operating software update anyway.

jwxspoon

Thanks for the reply!

I haven't installed the nav disc, just ordered it. Sequence of events as follows:

works great friday afternoon

heavy rain all friday night

saturday am I get mercedes symbol and then nothing on screen and tele nav error

JeffyPooh

Perhaps the previous owner called in to cancel his Teleaid account, and now the car is complaining.

^^ judt a wild guess to hold you over till Monday.

Dexion

When I got that I had to remove the negative battery terminal in the trunk for about 20 minutes. Then everything worked perfectly again.

jwxspoon

Thanks Dex I will try that tomorrow morning.

jwxspoon

OK this morning I tried Dex's suggestion; removed the negative battery terminal from the battery in the trunk for 20 minutes, hooked it back up and voila, everything is back, no errors.

Weird as hell. I am going to go ahead and remove the driver's side trunk liner and clean and grease the splitter connections as preventive maintenance. I sure hope that I don't run into this every time it rains or this will be a short lived love affair with this vehicle.

Many thanks Dex and also to others for the PM's and answers to this thread.


Jeff

JeffyPooh

"...grease the splitter connections..."

If you do that incorrectly (e.g. getting the wrong type of grease into the RF connectors), it can be a very bad thing.

jwxspoon

Agreed. I have a bit of experience working with electronics in the military, so I should be competent to at least put down some dielectric grease

jw

JeffyPooh

"...electronics in the military..."

Perfect!

You can probably imagine what I was worried about...