Technical modifications: Passenger cars: Steering - BT46.00-Z-9999AZ
MODEL all
| 2nd version of steering lock | MODEL 129.### #F as of 048351 up to 058103, 140.### #A as of 036951 up to 130212 | BT46.10-P-0001-01A | |
| 3rd version of steering lock | MODEL 129.### #F as of 058104 up to 082352 | BT46.10-P-0002-01A | |
| 4th version of steering lock | MODEL 129.### #F as of 082353 up to 31.3.95, 140.### #A as of 130213 up to 31.3.95 | BT46.10-P-0003-01A | |
| 5th version of steering lock | MODEL 129.### #F as of 3.4.95, 140.### #A as of 3.4.95 with TRANSMISSION 722.3 /4 /5 | BT46.10-P-0004-01A | |
| 6th version of steering lock | MODEL 140.### #A with TRANSMISSION 722.6 | BT46.10-P-0005-01A | |
| Bolted connection of steering shaft and steering coupling | MODEL 140.### #A as of 033950 up to 166259 as of 15.10.91 up to 11.10.93 | BT46.10-P-9110-01A | |
| Modified steering coupling | MODEL 140.### #A as of 166260 as of 12.10.93 | BT46.10-P-9111-01A | |
| Modified steering coupling | MODEL 168.007 /008 /031 /032 /033 as of 1.6.00 | BT46.10-P-9111-01GC | |
| Surface protection of bolted connection, steering gear to front axle carrier modified | MODEL 140 as of 1.6.97 | BT46.20-P-0002-01A | |
| Modified rack-and-pinion steering | MODEL 169 as of 31.3.05 | BT46.20-P-0600-01AK | |
| Surface protection of bolted connection between tie rod and steering knuckle revised | MODEL 210 as of 18.5.98 | BT46.40-P-0001-01A | |
| Dimensions of track rod ball joints modified | MODEL 220... | BT46.40-P-0002-01A |