Replacement Of Acc Control Module - Dead Battery (83/44)

Publication date: 1992-07-01
Reference number: 83/44

REPLACEMENT OF ACC CONTROL MODULE - DEAD BATTERY

TECHNICAL SERVICE BULLETIN

Reference Number(s): 83/44, Date of Issue: July 1992

MODEL 140 WITH ACTIVE CHARCOAL FILTER - REPLACEMENT OF ACC CONTROL MODULE

Model(s): 1992 Mercedes-Benz 300 SD, 300 SE, 400 SE, 500 SEL, 600 SEL

Group: 83 - Climate Control System, Automatic/Tempmatic A/C

Bulletin No.: MBNA 83/44

Date: July 1992

SERVICE INFORMATION

Vehicles produced between January and April 1992 within the chassis number range shown below may be equipped with a faulty ACC pushbutton unit. The problem is within the charcoal filter control circuit which causes excessive current draw (over 150 mA) after the ignition has been shut off.

EFFECTIVE SERIAL NUMBER

Model	From Chassis End Number	To Chassis End Number
140	A055784	A078197

The faulty units are manufactured by Kammerer and can be identified by accessing the ACC pushbutton unit on-board diagnostics sensor values readout mode. To enter this mode, turn the ignition switch on, press AUTO, make sure that both temperature wheels are set-in the white zone and then hold the REST button for 5-10 seconds. Press the AUTO button until test step 9 is displayed in the left LCD window. The manufacturer code is displayed in the right side LCD window.

Faulty Kammerer units are identified by code 06.

Good Kammerer units which do NOT need to be replaced are identified by codes 04, 05, 07, etc.

Bosch units which do NOT need to be replaced are identified by codes 58, 59, or 60.

In case of a complaint of battery discharge which is caused by excessive current draw, replace the Kammerer unit with the Bosch unit shown below, and recharge battery.

PARTS INFORMATION

Part Name	Part Number
ACC pushbutton unit	140 830 08 85
Battery, 100 Ah	003 541 92 01

WARRANTY INFORMATION

NOTE: Only one of the operation numbers listed below can apply. Do not use both!

WARRANTY INFORMATION I

Damage Code	Operation No. *	Time (hrs.)	Model Indicator(s)
83405-73	02-8376	0.1	A1, A2, A3, A4, A5
* Operation - Automatic A/C Pushbutton control module manufacturer's date code, check.

WARRANTY INFORMATION II

Damage Code	Operation No. *	Time (hrs.)	Model Indicator(s)
83405-73	02-8377	0.7	A1, A2, A3, A4, A5
* Operation- Automatic A/C Pushbutton control module manufacturer's date code, check and replace control module.

NOTE: For battery recharging, refer to the latest Warranty Time Guide for operation no. and time.