A/C/Interior - Blower Won't Turn OFF/Interior Water Leak
Date: January 14, 2009Order No.: T-B-83.10/112b
Supersedes: T-B-83.10/112a dated Sept. 3, 2008
Group: 83
Revision History
Revision Date Purpose
b 1/14/09 Part Number and Warranty Information Updated
a 9/3/08 Part Number Updated
- 3/7/08 Initial issue
SUBJECT:
All Model 164 Vehicles
Water Entry into Vehicle Interior
If you receive customer reports in the above model vehicles of a nonfunctional blower motor (blower motor runs continuously) or water drops in the front passenger footwell after an engine wash, this may be caused by an insufficient sealing of the air/water box when a lot of water is used when the engine compartment is cleaned near the right side of the firewall. The affected areas are the air quality sensor shown as A in Figure 1, 3 and 4 and the sealing surface between the firewall and air intake pipe housing shown as B in Figure 1 and 4. To remedy, proceed with the following.
1. Switch off wiper system and remove key from ignition.
2. Detach glove box and remove interior filter. Refer to WIS document AP83.00-P-8381GZ (code 580) or AP83.00-P-8384GZ (code 581).
3. Open the hood to check the water drain of the major assembly compartment (Figure 3, G) on the right side for debris and clean if necessary.
4. Remove the seal between the major assembly compartment partition/engine hood on the driver side (Figure 2, C) over a length if approx. 15cm and place in the engine compartment (Figure 2, D).
5. Route an external water hose (Figure 3, F) across the windshield on the driver side, across the area of the removed seal (Figure 2, C), through the engine compartment (above the wiper system), and into the area between the firewall and the air intake pipe housing on the passenger side (Figure 3, E).
6. Close the hood. The pressure of the hood sealing surface on the air/water box seal intensifies the water ingress, so the area of water entry can be clearly identified, then direct water from the external hose into the affected area.
7. Visually check vehicle interior for leaks. In the area of the removed interior filter, the sealing surfaces of the air quality sensor (Figure 1, 3 and 4, item A) and the sealing surface between the firewall and the air intake pipe housing (Figure 1 and 4, item B) are visible.
8. Seal off areas of the seal affected by water entry. Detach the air intake pipe housing by removing the retaining clip (Figure 1, H) and the two threaded connections (Figure 4, J). Seal the surfaces between the air quality sensor/air intake pipe housing (Figure 4, A) and firewall/air intake pipe housing (Figure 4, B) using Terostat 934 sealing compound (A004 985 29 20).
9. Repeat the leak test steps 5 and 6. If no water ingress can be found, remove the external water hose and reassemble the vehicle in the reverse order. If the retaining clip was not installed at the factory, retrofit a clip (Figure 1, H).
Note:
If no water entry can be detected using this test, refer to DTB-T-62.25/09a
Parts Information
Note:
The following allowable labor operations should be used when submitting a warranty claim for this repair. This information has been generated on January 14, 2009. Please refer to Netstar --> Star TekInfo --> Star Time for the most current labor time allowance.
In Case of Warranty, use the table above.