Okay gang, this is in my '91 560SEL.

I parked the car a few years back and the system worked. I took the radio out to replace the center vacuum pod and never reinstalled the radio. Fast forward to modern day. Radio in... punched in code... nothing. I do hear clicking from the trunk module but that is it. Antenna extends.

Attempted incorrect code on purpose and main headunit blinked off, then on with CODE again. So this would mean my code is correct, right?

There is power at the trunk unit, fuses good. I installed an extra trunk unit I pulled from the JY, same thing.



Any ideas?

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

Be sure the gray data cable has a good connection at both ends. Does the car have a CD changer?

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

No changer.

The grey DIN cable is secure on both ends. I cannot see how it could have deteriorated just sitting idle.

I am frustrated to say the least.

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

Is the fuse on the tuner good? Can you hear it click when you turn on the headunit?


Sent from my iPhone using Tapatalk

__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

Yes, fuses good in both HUs. I have even checked the fuse for continuity. It accepts my code.

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

I had the same exact problem with the 1432 headunit when I bought my car. Trying to remember the fix...

__________________
http://i193.photobucket.com/albums/z...-RESIZED-1.jpg
1991 300E - 212K and rising fast...

LOL well hopefully you can recollect.

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

From the Operation Guide:

After one incorrect code is entered, the system allows two more recoding attempts. After the third attempt, the word WAIT is displayed. A period of 15 minutes must pass and the word CODE must again be displayed before recoding can be successful. The radio must be left on during this period.

If the correct code has not been entered after three separate attempts- and therefore after two 15 minute wait intervals- the radio will lock for 24 hours to prevent any further recoding attempts. The radio must be left on during this period in order for it to re-enter the code mode.


I rec that you disconnect the battery, reconnect the battery, let the radio sit powered on for 24 hours, and then renter the correct code. Bummer.

Uh, it is not a code issue.

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]