Security Module

The SKREEM (Sentry Key Remote Entry Module) is the immobilizer module used in Mercedes cars. It authenticates keys using two-way communication and rolling codes.

Known issues

Effects happening when the SKREEM module is bad:

• Alarm randomly triggers, with or without sound
• Car shutting off (?)
• Keys not being recognized anymore.
• Car not starting

Coupe model

The Coupe model can have issues with the back window not closing well, due to the SRT-6 wing not mounted with sealant (?). This then causes the floor of the trunk to flood, and thats exactly where the SKREEM is located.

• Pictures of the issue
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See also

• Crossfire Repairs by Paul explaining how to replace the SKREEM module: https://www.youtube.com/watch?v=X-VhH4usWUc
• Mobile Diagnostics and Programming Services have shown that they can reprogram the SKREEM to function again: https://mdp-services.com/crossfire-solutions