Bmw E46 Dmtl Pump
By the Editorial Staff
March 16, 2026
New pumps temporarily "mask" the leak because fresh installation pressure or a slightly different fit squishes the grommet better. But after heat cycles and vibration, the leak reappears. Why is the grommet so often missed? BMW doesn't always list it separately in parts diagrams (especially for cars around 2005-2015).
BMW E46 how to replace Diagnostic Module Tank Leak DMTL (Detection Pump) DIY AlexE46 277 subscribers Subscribe. Ok, so after doing research, watching youtube videos, and reading the wiring diagrams, it seems like the simplest way to check this is by attaching a test light to the black and green wire at the connector to the DMTL pump and with the ignition key on, grounding out the wire. Replace the defective leak diagnosis pump -often referred to as the "DTML pump".
DMTL leakage diagnosis pump, activation: Short circuit to B+. 12:26 AM. This part is listed by BMW as BMW part number 16137193479 (16-13-7-193-479) and is described as the Fuel System Evaporative Leak Diagnosis Pump used on 2002+ E82, E46, E9X, E60, F10, E63, F13, E65, F02, E83, F25, E53, E70, E71, E85, E89 models.
The leak diagnosis is used in the emissions system to detect fuel vapor leaks in the fuel system. BMW E46 3-Series Fuel Vapor Detection Pump OEM 16136756440 (Early Models) SKU: 16136756440 Fuel Vapor Detection Pump (DMTL).Made by Bosch OEM. Part# 16 13 6 756 440 Cross Reference: -261-222-013 0261222013 $157.60 $258.45 ★★★★★ 3 review (s).
DMTL Pump -- part number 16136752551 DM-TL, or Diagnosis Module. I had the BMW Dealership in Stratham, NH take a look at it while I had my oil changed. They told me that the message was due to a fault stored on the DMTL (Leak Detection Pump) and that it needed to be replaced.
Quote for parts and labor was $425. Any operators out there who are dealing or have dealt with a similar issue? If so, what do you. I am struggling to clear a code for my DMTL on my '03 325i.
I think I have read every post here regarding it, but can't seem to clear it. Here is what I've done so far. Replaced gas cap Replaced pump Pressure tested the system with a smoke machine (yeah, I know, I should have done this before I.