If you find a wheel where the stamping number is not listed, we can quickly update the list.1982 Volvo 240 L4-2127cc 2.1L SOHC B21F Technical Service Bulletin # TJ25590 Date:

111209

Electrical - Battery Current Consumption And RDAR

Title Battery current consumption and RDAR

Ref No: US25590.1.1 en-US

Issuer -

Partner 3 US 7510 Volvo Cars North America

Func Group: 3117

Func Desc: Battery, general

Status Released

Status Date 12-09-2011

Issue Date 12-02-2011

Reference

Attachment

Vehicle Type

CSC = Customer Symptom Codes

DTC = Diagnostic Trouble Codes

Text

CSC = Customer Symptom Code

CCA = Cold Cranking Amps

1982 Volvo 240 L4-2127cc 2.1L SOHC B21F Copyright ? 2013, ALLDATA 10.52SS Page 25

If using a printed copy of this document, always check for the latest online version.

DESCRIPTION:

It has come to our attention that there is an increasing replacement rate of Sirius control units (RDAR) due to high quiescent current. Reports have

been submitted stating that a value of 30 to 70 milliamperes is causing a flat battery within a time frame anywhere from overnight to several days.

Although the value above could be a contributor in a drained battery over extended periods, it is important to understand how a small current drain

of for example, 50 milliamperes (0.050 amperes), will affect a healthy automotive battery.

Volvo original equipment batteries are rated at a capacity of 60 ampere hours for the 600CCA battery and 80 ampere hours for the 700CCA battery.

In the simplest of terms, a 1.0 ampere drain would take 50 hours to drain a 50 amp hour battery. Therefore, if we use a 50 milliamp (0.050 amp)

drain as an example for a 80 amp hour capacity battery, it would take 1600 hours (66.6 days) to completely drain the battery.

80 amp hour batt capacity divided by 0.050 amp drain = 1600 hours

The above example is given the battery has not had any charge applied to it and has remained static for 66 days.

SERVICE:

Although 70 mA is out of specification for the complete vehicle current consumption, it is not enough to drain the battery in a few days.

Do NOT replace the RDAR as a repair for battery drainage if the RDAR current consumption is less than 100 milliamp unless the customer reports