TTS and 1 second time relay control CSV in parallel array. At the time of hot start, the original TTS may have had a power-on time of zero seconds, but in the case of later compatible TTS, most of them have a minimum power-on time of 1 to 2 seconds. Compatibility TTS complements the functionality of the 1 second time relay. For that reason, I guess that the 1-second time relay was abolished in later models. However, if the TTS is broken, the TTS will not conduct electricity at all. At this time, the 1 second time relay acts as a backup. If the original and compatible TTS had the same characteristics, I believe the old Mercedes engineers would have included a 1 second time relay as a backup in anticipation of this emergency.
