Component Location - E70
On the E70, the active reservoir, including the delivery unit, is located on the right-hand side directly behind the front bumper panel. The passive reservoir is located on the left in the underbody, approximately under the driver's seat. The transfer unit is installed on the right in the underbody. Both fillers are located in the engine compartment.
Scheme 7
SCR component location - E90
| Index | Explanation |
|---|---|
| 1 | Active tank |
| 2 | Delivery module |
| 3 | Filler for active tank |
| 4 | Transfer pump |
| 5 | Filter |
| 6 | SCR catalyst |
| 7 | NO x sensor - post SCR catalyst |
| 8 | Passive tank |
| 9 | Metering module |
| 10 | Exhaust gas temp sensor - post DPF |
| 11 | NO x sensor - pre SCR catalyst |
| 12 | Filler neck for passive tank |
| 13 | DOC/DPF |
INDEX EXPLANATION CHART
Component Location - E90
On the E90, both the active reservoir as well as the passive reservoir are located under the luggage compartment floor with the active reservoir being the lowermost of both.
The fillers are located on the left-hand side behind the rear wheel where they are accessible through an opening in the bumper panel. The fillers are arranged in the same way as the reservoirs, i.e. the lower most is the filler for the active reservoir. The transfer unit and the filter are located behind the filler.