
Fig. 194 Coolant temperature display in instrument cluster: Ⓐ cold; Ⓑ normal; Ⓒ warning
First read and observe the introductory information
and safety warnings In normal driving conditions, the needle will be in the middle section of the scale. The temperature may also rise when the engine is working hard, especially at high ambient temperatures.
Several warning and indicator lamps will light up briefly as a functional check when the ignition is switched on. They will switch off after a few seconds.
| Flashesa) |
Needle position |
Possible cause | Solution |
|---|---|---|---|
|
Ⓒ Warning area |
Coolant temperature too high. |
Do not drive on! Stop the vehicle as soon as possible, and when safe to do so. Stop the engine, let the engine cool down until the needle is back in the normal area. Check the coolant level . |
|
Ⓑ Normal area |
Coolant level too low. | After
the engine has cooled down, check the coolant level and refill engine coolant
if the level is too low . There is a fault if the coolant level is correct. |
|
| – | Fault in the coolant system. |
Do not drive on! Seek expert assistance. |
|
| – |
Ⓐ Cold |
The engine has not yet reached operating temperature. | Avoid high engine revs and heavy engine loads until the engine is warm. |

WARNING

NOTICE
a) Displayed in colour on an instrument cluster with colour display.
Introduction
Coolant specificationRemoving and installing data bus diagnostic interface -J533-
Note
When renewing the control unit, select
Renew function for the respective control unit in
Guided fault finding or
Guided functions mode
→ Vehicle
diagnostic tester.
Removing
...
Removing and installing centre console trim in footwell
Note
Removal and installation is described for the centre console
trim in footwell on driver side. Follow same instructions for
the front passenger side as appropriate.
Special tools and workshop equipment
required
...
Removing and installing lumbar support adjustment switch -E176-/-E177-
Note
Removal and installation are described for the left
vehicle side. Follow same instructions for the right side as
appropriate.
Removing
–
Remove se ...