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2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Anti-theft protection activated. Service required.
Got this darn message out of nowhere today. I know I'm not the first. It seems that somehow the security PIN got erased. But HOW does that happen? I ran diagnostics and everything seems to be functioning correctly.
THANK GOODNESS I have @BenzNinja to help. He did need to purchase a new PIN (or the correct one) from Mercedes. Waiting now to get the PIN.
Using XENTRY, apparently the anti-theft protection is activated.
The 25 zeros is where the PIN should appear. Tomorrow I'm going to check to see if the PIN on my other car is visible and will write it down.
Last edited by JettaRed; Jul 11, 2024 at 08:56 PM.
Got this darn message out of nowhere today. I know I'm not the first. It seems that somehow the security PIN got erased. But HOW does that happen? I ran diagnostics and everything seems to be functioning correctly.
THANK GOODNESS I have @BenzNinja to help. He did need to purchase a new PIN (or the correct one) from Mercedes. Waiting now to get the PIN.
Using XENTRY, apparently the anti-theft protection is activated.
The 25 zeros is where the PIN should appear. Tomorrow I'm going to check to see if the PIN on my other car is visible and will write it down.
That is strange indeed, I too wonder why the PIN got erased.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
To restore access to the COMAND module, you will need the 25-character PIN and someone who can use Vediamo to enter it. I was able to recover mine with help from @BenzNinja.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
@BenzNinja successfully restored my COMAND unit. This cannot be done through XENTRY, but rather Vediamo. Also, you need the 25-character PIN, which appears to be stored in VeDoc.
I know this is an old post - but I'm stuck in a similar position....
My COMMAND unit became unresponsive - the dealer in Denver, Colorado recommended a replacement for $5000! That was a non-starter for me.
I bought a used unit from a MB parts dealer in the US - fitted it - but now have the anticipated Anti-theft message. The dealer has told me they can not help.
Does anyone know if it’s possible to ‘unlock’ a used head unit? I have the proof of purchase from the parts dealer and the unit is not loisted as stolen.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
The best thing to do is to send @BenzNinja a message through his website. I sent him a link to this thread and he says that he can unlock your head unit.
Dealers may not be allowed by Mercedes corporate to help, not that they are unable to. Plus, I'm sure they would rather get your $5000.
Hi everyone,
I recently bought a Mercedes E250 Coupe (C207). The car was stored in a container for about 50 days and the battery was completely dead. After replacing the battery, everything worked fine for a day, then suddenly the COMAND screen started showing:
Anti‑Theft Protection Activated Service Required
I’ve tried all the common fixes online — disconnecting the battery, resetting COMAND, and resyncing with the blade key.
Only the blade‑key unlock works temporarily, but the moment I insert the ignition key, the error pops back up immediately and the screen locks again.
Has anyone seen this before or knows which module/fuse usually causes this on the C207? Any help would be really appreciated.
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