Remove/install Distronic sensor (DTR) - AR30.30-P-1010GZ

MODEL 164, 251 up to model year 2009 with CODE (219) Distronic (DTR)

Fig 1: Identifying Distronic Sensor (DTR) Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Turn key in ignition switch to position "0".	On vehicles with Keyless-Go, code 889: Press keyless go start/stop button repeatedly until ignition is switched off
2	Open engine hood and raise to vertical position	Model 164	AR88.40-P-1000GZ
2	Open engine hood and raise to vertical position	Model 251	AR88.40-P-1000RT
3	Remove radiator grille	Model 164	AR88.40-P-4001GZ
3	Remove radiator grille	Model 251	AR88.40-P-4001RT
4	Unlock and disconnect electrical connector (1) from DTR radar sensor (4)
5	Remove fixing bolts (3b), remove DTR radar sensor (4)	Do not turn on adjustment screws (3a).
6	Install in the reverse order
	Checking
7	Check setting of DTR radar sensor (A89b1) and correct if necessary		AR30.30-P-1000R
8	Read out and erase fault memory
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A