Loss of R134a refrigerant
Table 1 indicates the permitted loss of refrigerant after a specific period of time. There is no leak. refrigerant oil may not be topped up.
Table 2 indicates the amount of refrigerant oil must be topped up with an unapproved loss of refrigerant due to a leak after a specific period of time.
Different cases:
- Loss of refrigerant per Table 1 is not exceeded
- Top up lost R134a refrigerant
- It is not permitted to top up the refrigerant oil
- Loss of refrigerant per Table 1
is exceeded
- Top up lost R134a refrigerant
- refrigerant oil must be topped up additionally per Table 2
| Table 1: Number of years since last filling | 0 - 1 | 1 - 2 | 2 - 3 | 3 - 4 | 4 - 5 |
|---|---|---|---|---|---|
| Permissible loss [g] → no need to top up refrigerant oil | ≤ 30 | ≤ 60 | ≤ 90 | ≤ 120 | ≤ 150 |
| Table 2: Number of years since last filling | R134a loss of coolant [g] | Top up quantity refrigerant oil |
|---|---|---|
| 0-1 | - <120 | 0 |
| 120 - 150 | 10 | |
| >150 | 20 | |
| 1 - 2 | - <180 | 0 |
| 180 - 210 | 10 | |
| >210 | 20 | |
| 2 - 3 | - <240 | 0 |
| 240 - 270 | 10 | |
| >270 | 20 | |
| 3 - 4 | - <300 | 0 |
| 300 - 330 | 10 | |
| >330 | 20 | |
| 4 - 5 | - <360 | 10 |
| >360 | 20 |
Follow NOTES FOR OPENING AND REPLACING PARTS in refrigerant circuit.
Depending on the type of component replaced on the heating and air conditioning system, it may be necessary to the top up the refrigerant oil, even if no measurable losses have occurred during drawing off.
Follow the notes provided by the heating and air conditioning system manufacturer, taking account of the tolerances (and inaccuracies) indicated in the operating instructions of the relevant service station.
Information on the required refrigerant fill quantity for the entire heating and air conditioning system is contained on the type plate (1) in the engine compartment.
If necessary, refer to the Technical Data for CAPACITY .
Installation note:
Reseal refrigerant filler necks on vehicle with sealing caps.