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Tire pressure monitor control unit, location/task/design - GF40.15-P-3001R

Model 230 up to 31.5.05 with CODE (475) Tire pressure monitor except CODE (494) USA version except CODE (498) Japan version 

Model 230 up to 30.6.05 with CODE (475) Tire pressure monitor with CODE (494) USA version with CODE (498) Japan version 

Fig 1: Identifying TPM (RDK) Control Unit
G05075411Courtesy of MERCEDES-BENZ USA
  Tire pressure monitor control unit, location The TPM control unit (N88) is located in the left-hand side of the luggage compartment.  
  Tire pressure monitor control unit, task up to 31.5.04. GF40.15-P-3000-03R 
    as of 1.6.04. up to 31.5.05 GF40.15-P-3000-03RA 
    with CODE (475) Tire pressure monitor
except CODE (494) USA version
except CODE (498) Japan version
as of 1.6.04 up to 30.6.05
with CODE (475) Tire pressure monitor
with CODE (494) USA version
with CODE (498) Japan version
 
  Tire pressure monitor control unit, design The TPM control unit (N88) consists of a HF receiver, a control unit circuit board with microprocessor and an interface for the data bus CAN.