// Datasheet
| REF | UNIT-EZS-01 |
|---|---|
| FAMILY | EZS/EIS |
| FITMENT | C-Class W203 / W204 · E-Class W210 / W211 / W212 · CLK W209 · CL W215 · A-Class W169 · ML W164 |
| SERVICE | EZS / EIS Ignition — Request a quote |
| BENCH | Basingstoke workshop · UK postal · mobile London & South East |
Part numbers
- 203 545 01 08
- 203 545 05 08
- 204 545 09 08
- 208 545 00 08 / 01 08 / 02 08 / 03 08
- 210 545 00 08 / 01 08 / 02 08 / 03 08
- 215 545 04 08 / 06 08 / 08 08
- 169 545 21 08
Many other EZS part numbers are repairable — send the number from your unit and we will confirm.
Common faults
- Key goes in but will not turn
- Key not recognised — no dash lights when inserted
- Ignition cutting out after a period of driving (seen on ML W164)
- Remote central locking dead
- No communication with the EZS on diagnostics
Repairable?
// Bench verdict
Yes — component-level PCB repair on your original unit, so your existing keys keep working. Keys are bench-tested against the repaired EZS before anything goes back in the car. One of our longest-running specialities, in the job log since 2016.