eddy, I had a new h35t doing this and it just about ate my lunch. The only time it came up was when this one certain operator got on it. He is 6 ft 5 in tall and wt 260, the seat had a beaded seat cover and it laid over the back of the seat and when he sat in it and seat was all the way back, the seat would push the back of the cover that covers the fuses and controller and the code came up. the other operators are smaller. moved a few things and problemn solved.This may not be your problemn but just thought id share

eddy;
The controller has detected that the two controller inputs (N1:58, N1;73 of the braking switch (1S1) have the same signal status. Possible causes braking switch (1S1) defective or the connection between the controller (N1:58, N1:73) and the braking switch (1S1) is faulty.

thanks forkingabout, i'll check the switches and see whats happening.

T ( traction code ) 237 = Brake: Semi-actuation signals not compatible

No idea what it means or how to fix, not had this error on a Linde yet, sorry.

Might be worth checking the microswitches & the brake cables on the brake valve block.