Model | 118, 177, 247 with engine 608, 654 |
Model | 167 with engine 264, 274, 654, 656 |
except code 581 (Automatic air conditioning) | |
Model | 167.9 with engine 256 |
except code 581 (Automatic air conditioning) | |
Model | 167 |
with code 581 (Automatic air conditioning) | |
Model | 213 with engine 264, 274 |
as of model year 2021 | |
with code 401 (Climatised front seats) | |
except code 913 (Hot country code) | |
except code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
Model | 213 with engine 264, 274 |
as of model year 2021 | |
with code 824 (Add.parts for countries w.low temperatures) | |
except code 913 (Hot country code) | |
except code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
Model | 213 with engine 264, 274 |
as of model year 2021 | |
with code 873 (Left and right driver's seat heating) | |
except code 913 (Hot country code) | |
except code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
Model | 213 with engine 264, 274 |
as of model year 2021 | |
with code 902 (Seat heater Plus for driver and front passenger) | |
except code 913 (Hot country code) | |
except code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
Model | 213 with engine 642, 654, 656 |
as of model year 2021 | |
except code 913 (Hot country code) | |
except code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
Model | 223 with engine 176, 256, 656 |
Model | 238 with engine 642 |
as of model year 2021 | |
except code 913 (Hot country code) | |
Model | 238, 257 with engine 254, 264, 274 |
as of model year 2021 | |
with code 401 (Climatised front seats) | |
except code 913 (Hot country code) | |
Model | 238, 257 with engine 254, 264, 274 |
as of model year 2021 | |
with code 824 (Add.parts for countries w.low temperatures) | |
except code 913 (Hot country code) | |
Model | 238, 257 with engine 254, 264, 274 |
as of model year 2021 | |
with code 873 (Left and right driver's seat heating) | |
except code 913 (Hot country code) | |
Model | 238, 257 with engine 254, 264, 274 |
as of model year 2021 | |
with code 902 (Seat heater Plus for driver and front passenger) | |
except code 913 (Hot country code) | |
Model | 238, 257 with engine 654, 656 |
as of model year 2021 | |
except code 913 (Hot country code) | |
Model | 247 with engine 260, 282 |
For countries with FMVSS certification |
Overview
This document contains information on:
General
Location
Function requirement
PTC heater booster function
General
The more efficient a combustion engine is, the less usable thermal energy is available from the coolant for heating. In order to still achieve the required level of heating comfort in the passenger compartment (particularly with a cold combustion engine), some models are equipped with a PTC heater booster on a market-dependent basis. This supplies the generated heat directly to the air flowing into the vehicle interior.
The climate control control system controls the PTC heater booster depending on the requested heating output.
1 | PTC heater booster |
P83.70-5757-82
Location
The PTC heater booster (1) is located in the air conditioner housing in front of the heater core. Depending on the vehicle and equipment installed, a second PTC heater booster (1) is located in the rear passenger compartment.
Function requirement
Circuit 30t ON
PTC heater booster function (1)
The PTC heater booster (1) consists of a heating register with PTC heater sections and a power regulator. A PTC section comprises several ceramic heater elements with a metallic frame. The metallic frame is provided with ribbing on the enlarged surface.
Energization of the heating elements of the PTC heater booster (1) causes them to heat up. The fresh air drawn in flows directly through the PTC heater booster (1) and is warmed up.