Remove/install coolant temperature sensor

AR15.60-P-2712OID

Remove/install coolant temperature sensor

20.03.2020

Engine

656 in model 167

2

Electrical connector

4

Thermostat housing

B11/4

Coolant temperature sensor

3

Mounting clamp

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

 Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

 

Remove/install

1

Drain off coolant.

AR20.00-P-1142OID

2

Remove pump unit for the front electrohydraulic suspension.

Engine 656 in model 167
with code 489 (AIRMATIC)
with code 490 (Electrohydraulic suspension)

AR32.50-P-0047ME

3

Release and disconnect electrical connector (2).

4

Pull out mounting clip (3) in the direction of the arrow.

5

Remove coolant temperature sensor (B11/4) from thermostat housing (4) and collect escaping coolant in suitable container.

6

Check seal of coolant temperature sensor (B11/4) for damage.

If damage is present:



Replace coolant temperature sensor (B11/4).

7

Install in the reverse order.

8

Read out and delete fault memory.



AD00.00-P-2000-06ME