7-80 BA 35203_04 * 3.0 * 35203_04_07_Wartung.fm
7 Maintenance
Monitoring of the SCR catalytic converter:
Fill level of urea solution
The warning messages are issued at a fill level of the urea tank below 15%.
Symbol
in field G
Message Result
• In the field G of the digital display, no symbol appears, no
warning light
lights up and no acoustic signal sounds.
Normal operating conditions
• The exhaust after-treatment is working in the
permissible range.
• Symbol G/4 appears continuously.
Caution!
• Fill level of the urea is below 15%.
➥ Top off urea as soon as possible
– see “Refueling with urea solution” on
page 7-88.
• Symbol G/4flashes.
Caution!
• Fill level of the urea is below 10%.
➥ Top off urea.
• Symbol G/4flashes (0.5 Hz).
• Warning light 66
lights up continuously.
• An acoustic signal sounds.
Caution!
• The fill level of the urea is below 5%.
➥ Top off urea immediately.
• Symbol G/4flashes (1 Hz).
• Warning light 66
lights up continuously.
• An acoustic signal sounds.
Caution! Critical condition
• Fill level below 5% for longer than 10 minutes.
• Diesel engine goes into protective functions
and performance is reduced by 30%.
➥ Top off urea immediately.
• Symbol G/4flashes (2 Hz).
• Warning light 66
flashes.
• An acoustic signal sounds.
Caution! Critical condition
• Fill level below 5% for longer than 15 minutes.
• Diesel engine goes into protective functions
and performance is reduced by 30%.
➥ Top off urea immediately.
• Symbol G/4flashes (2 Hz).
• Warning light 66
flashes.
• An acoustic signal sounds.
Caution! Extremely critical condition
• Fill level below 5% for longer than 20 minutes.
• Diesel engine goes into protective functions
and performance is reduced by 30%.
• The speed of the diesel engine is limited.
(1200 rpm).
➥ Top off urea immediately.
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