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

MODEL 172, 218 with CODE (233) Distronic Plus 

Illustrated on model 218 

Fig 1: Identifying Distronic Sensor Remove/Install Components - Illustrated On Model 218

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Switch off ignition and remove transmitter key or KEYLESS-GO start/stop button from electronic ignition lock control unit	KEYLESS-GO start/stop button only on vehicles with code (889) Keyless-Go.
2	Remove middle reinforcement at the front	Model 218 Do not remove the hood latches. If necessary, detach the electrical connectors from the hood latch.	AR62.30-P-1570EL
3	Remove cooler air ducting	Model 218 with engine 642	AR20.20-P-3865-10EL
4	Remove front bumper	Model 172	AR88.20-P-2000W
5	Unlock and disconnect electrical connector (1) from DISTRONIC electric controller unit (A89)
6	Unscrew nuts (2) and remove DISTRONIC electric controller unit (A89) from bracket
7	Install in the reverse order
8	Connect Star Diagnosis and perform initialization and calibration of DISTRONIC electric controller unit (A89)	When installing a new DISTRONIC electric controller unit (A89).	AD00.00-P-2000-04A
9	Read out fault memory and erase if necessary		AD00.00-P-2000-04A