Parts for your 2019 Mitsubishi Asx-Receiver driers

2019 Mitsubishi ASX receiver-drier: what it does and when to service it

Technical references indicate the 2019 Mitsubishi ASX does use a receiver-drier. The Mitsubishi Motors service manual for ASX/RVR/Outlander Sport (HVAC/Group 55A) specifies a thermal expansion valve (TXV) system paired with a sub-cool condenser that houses an integrated receiver-drier (desiccant). Mitsubishi’s ASA parts catalogue lists the condenser assembly with an internal desiccant element rather than a separate canister. DENSO’s HVAC technical literature on sub-cool condensers also describes this exact arrangement—receiver-drier integrated into the condenser side tank—used on many late-model vehicles.

On the 2019 ASX, the receiver-drier’s job is to keep the air-con clean, dry, and consistent. It stores a small reserve of liquid refrigerant, filters out fine debris, and—most importantly—absorbs moisture using a desiccant pack. Because it’s built into the condenser’s end tank, there’s no separate silver canister under the bonnet like on older cars. The end result is steadier liquid flow to the TXV, better cooling performance, and added protection for the compressor.

There’s no fixed replacement interval. Instead, it’s best practice to renew the receiver-drier (or the serviceable desiccant bag, where available) whenever the system has been opened to the atmosphere, after compressor failure, or if contamination/moisture is suspected. Leaving a saturated drier in place can lead to ice at the valve, erratic vent temps, corrosion inside the system, and premature compressor wear.

• Replace the receiver-drier when:
  • The A/C system has been open (hoses off, condenser swap, leak repairs)
  • The compressor has failed or shed debris
  • Moisture ingress or acid formation is suspected

Good workshop practice on a 2019 ASX includes fitting new O-rings, adding the correct PAG oil amount for any parts replaced, nitrogen pressure-testing, and pulling a deep vacuum for long enough to boil off moisture. Because the drier is integrated, many genuine condensers require replacing the whole unit, some aftermarket options provide a replaceable desiccant bag—handy when the condenser itself is fine. In Australia and New Zealand, only licensed technicians should recover and charge refrigerant, and the under-bonnet label should be checked for the correct gas (some markets use R134a, others R1234yf) and charge weight.

Typical signs of a tired or saturated drier include poor cooling at idle, rapid compressor cycling, or pressure readings that don’t stabilise. If the condenser ever needs to come out for a leak, it’s a smart time to refresh the drier element and start the A/C off with a clean slate.

Popular questions

Does the 2019 ASX have a separate receiver-drier canister?
No. On this model it’s integrated into the condenser’s side tank as a desiccant pack. That saves space and improves liquid refrigerant control. Depending on the brand of condenser, the desiccant may be replaceable as a service kit, but many genuine units require condenser replacement to renew the drier.

When should the receiver-drier be replaced on a 2019 ASX?
It’s not a kilometre-based item. Replace it any time the A/C system is opened, after a compressor failure, or if moisture/contamination is suspected. Doing so protects the TXV and compressor, helps avoid icing at the valve, and restores stable cooling performance.

Can they keep driving if the receiver-drier is saturated?
They can, but it’s not wise. A saturated drier allows moisture to circulate, which can corrode components and cause erratic cooling. It’s best to book the ASX in for proper diagnosis, vacuum dehydration, and replacement of the drier element where required.