Mazda 323 BJ, ABS and TCS lamps light up (but they work occasionally)

Hello guys, I’m currently driving a Mazda 323 BJ (1998), 1.5l. The problem: the ABS and TCS lamps have been burning for a little more than 1.5 years. The problem has been dealt with many times here, but none of the solutions have helped me so far. Maybe there are new insights in the meantime. As I said, ABS and TCS lamps light up. If I start the engine and roll in the stand gas and “drive” in the stand gas, then the lamps are out. The TCS works, you can see nicely with ice and snow. I’m going through the city and the lights are going on and ABS / TCS are not working. Other phenomenon: I drive through the city and the lights are shining. During the ride (e.g. at 30 km/h) I turn off the engine and restart it. The lamps go off and ABS / TCS work completely normal… until the engine is switched off again. And if you don’t even expect the lamps to go off like this, it happens maybe 3 times a year, so it’s more the exception. Mazda Werkstatt and Bosh Service have already read out the error (multiple…) and said that the control unit (2200 Euro) or at least the hydro generator (750 Euro) is defective. I can’t imagine it, but it works, if you turn off the engine for a short time during the ride… I sprayed the small, narrow plug from the control unit with contact spray, didn’t do anything. I jammed the battery for a whole day, didn’t break anything. t. I replaced the fuse, also unsuccessful. Maybe one or the other recognizes the usage here: January 2009: battery replaced (against a new and stronger one with approx. 65 Wh, standard are 40, I think). July 2009: ABS and TCS shine uniquely. I stopped and turned off the engine and left it new. Problem was gone. September 2009: brake pads rear renewed September 2009: new winter tires bought. Since then (summer tires had gone off) September 20 09: Review & TÜV made, no problems found about from October / November 2009: ABS / TCS light up permanently, as described above Does someone know (new) solutions? (Thanks for reading, it has become a lot. )